Taiki Kudo is an upbeat boy with a desire to help those in need, although he tends to overexert himself. One day, he hears the voice of a Digimon named Shoutmon who is on the verge of death. Wanting to help him, Taiki is given a Digivice known as a Xros Loader, and he and his friends Akari Hinomoto and Zenjiro Tsurugi are warped to the Digital World where they meet Shoutmon and his allies, Ballistamon, Starmon and the Pickmons. By using the power of the Xros Loader, Taiki can perform a DigiXros, which can fuse any of his allies together into different forms. Taiki and his friends use this ability to fight the forces of the Bagura Empire while crossing paths with teams Blue Flare and Twilight.
Though it seemed Ryouma had betrayed the Hunters, Astamon reveals to Tagiru he is the embodiment of Quartzmon's Terminal and has been manipulating Ryouma the entire time. Assuming his true form, Quartzmon reveals that he used Ryouma to obtain enough Digimon data to construct his main body before fusing into it and burrowing underground to turn Earth into data to asborb. The Old Clock Store Owner has everyone gather around him to lend the power from their Xros Loaders, while having Clockmon temporaryily freeze time to halt Quartzmon's digitizing of all life on Earth long enough for Tagiru to obtain the Brave Snatcher. Taiki then passes his goggles to Tagiru, asking him to hunt Quartzmon using the combined strength of himself, Tai, Davis, Takato, Takuya and Marcus. While the others are digitized, Tagiru and Arresterdramon proceed to hunt down Quartzmon with the latter assuming Superior Mode and Digi-Xrossing with the Brave Snatcher to destroy Quartzmon at the root. With Quartzmon reduced to a DigiEgg and everything restored, the DigiDestined, Tamers, Legendary Warriors, and DATS agents return to their universes while the Xros Heart and Hunter Digimon return to their respective human and Digital worlds. However, a month later, Gumdramon returns to the real world and is reunited with Tagiru. The Old Clock Store Owner appears in front of Taiki and Yuu, revealing himself as a ressurrected Bagramon and that he wanted to help them stop Quartzmon, a by-product of his evil. He also reveals that some Digimon have remained in their world and tells them to be on their guard.
The Old Clock Store Owner explains that to defeat Quartzmon one of the Digimon Hunters must prove him/herself stronger than all the others to obtain the Brave Snatcher, what remained of Bagramon, and infuse it with the powers of Taiki and the five Legendary Heroes from other time-space universes who saved their respective Digital Worlds. Before sending Tagiru, Ryouma and Noboru's teams, and a few other hunters to a separate dimension, the Old Clock Store Owner gives Akari and Zenjirou their own Xros Loaders so they and the reformed Xros Heart United Army can help keep Quartzmon at bay. Finding themselves fighting an army of Myotismon clones which emerged from Quartzmon, Xros Heart forms Shoutmon DX, XrosUpBallistamon with Deputymon, XrosUpDorulumon with PawnChessmon, XrosUpTsuwamon with SuperStarmon and XrosUpMervamon with Beelzemon. The fight takes turn for the worse when some of the Myotismon digivolve into MaloMyotismon and a group of VenomMyotismon. Just when the children are about to be defeated, Marcus and his Agumon appear with Tai and Agumon, Davis and Magnamon, Takuya, Takato and Guilmon. Tai's Agumon Warp Digivolves to WarGreymon, while Marcus' Agumon Double Warp Digivolves to ShineGreymon. Takato and Guilmon Biomerge to Gallantmon, while Takuya Fusion Evolves to Aldamon. Soon, Magnamon runs out of energy and becomes Veemon, at which point Ken arrives with Stingmon, soon followed by Matt and MetalGarurumon and the rest of the Legendary Warriors. Veemon and Stingmon immediately DNA and then Mega Digivolve to Imperialdramon, while WarGreymon and MetalGarurumon DNA Digivolve to Omnimon and Kumamon and the other Legendary Warriors fuse with Aldamon to Ancient Spirit Digivolve to Susanoomon. Grani then appears and fuses with Gallantmon to become Gallantmon Crimson Mode, while Marcus upgrades ShineGreymon to ShineGreymon Burst Mode. During the battle, Marcus and ΩShoutmon help fight some of the MaloMyotismon, while Imperialdramon assumes his Fighter Mode in ord
The story begins with a seventh-grade boy named Taiki Kudō dreaming of commanding a Digimon army. The next day, Taiki spots a red creature flickering in static and hears a mysterious voice which presents him with a Xros Loader, into which the creature is absorbed. He and his friends, Akari Hinomoto and Zenjirō Tsurugi, are then sucked into a portal to the Digital World, where they are attacked by MadLeomon and his troops. The group is rescued by Ballistamon, Starmon, the Pickmon, and the mysterious red creature: Shoutmon. After Taiki and his Digimon companions fight back against MadLeomon and his troops, MadLeomon absorbs some Chikurimon, Troopmon, and Mammothmon to become Armed MadLeomon. Taiki uses his Xros Loader to allow Shoutmon and Ballistamon to DigiXros into a more powerful form. After injuring Armed MadLeomon, Shoutmon then uses the DigiXrossed Starmon and Pickmon, in the form of the Star Sword, to strike down Armed MadLeomon with a finishing blow. A portal appears recalling MadLeomon and his minions. Later, several Digimon are seen conversing about their evil plans after seeing the fight. As the episode ends, a boy and a girl, each with their own Digimon companions, watch Taiki's group from afar.
It is a year since Taiki Kudō's adventure in the Digital World as he forms the “Xros Heart” basketball team together with Yū Amano, who became his junior at his school, and Tagiru Akashi. However, on his way home from game, Taiki sees a monstrous shadow within a space fluctuation before being confronted by three children. The leader of the trio recognizes Taiki and his potential but tells him not to meddle in their affairs before leaving. The next day after school, Tagiru hears a voice begging to be saved, and after seeing a spacial distortion, Tagiru gets dragged right into it and ends up in a Digital World like dimension called the DigiQuartz, where time flows differently to the real world. Tagiru sees the source of the voice, Gumdramon bring attacked by a MetalTyranomon until the three children arrive and fight it with their Digimon, but it escapes from them. After being told they are Digimon Hunters, Tagiru wants to be one too as he is told to get a X Loader first. Teaming up with Gumdramon, Tagiru heads to the home of the Old Clock Store Owner and receives a crimson X Loader from him. Taiki and Yū find out about the rampaging Digimon and when they see Tagiru warping into the DigiQuartz, they decide to follow him. Tagiru and Gumdramon fight a losing battle with MetalTyranomon until Tagiru learns to Super Evolve Gumdramon into Arresterdramon and defeat it. After capturing MetalTyranomon's data into his Xros Loader, Tagiru sees Taiki and Yū, who are branding their own X Loaders, much to his surprise, but before they start to talk about the situation, Shoutmon contacts Taiki through his Loader. Gumdramon shivers and hides behind Tagiru at hearing Shoutmon's name as he explains to Tagiru that it is none other than the Digimon King himself.
What seemed to be a normal day for Tagiru goes awry when his school is being absorbed into DigiQuartz before finding a Tsumemon that Digivolves into Keramon. When Ryoma arrives, Keramon Super Evolves to Chrysalimon as Arresterdramon and Astamon respectively Xros Up with Ogremon and Triceramon. However, Chrysalimon spreads DigiQuartz to Tagiru's house, making his mom and dad disappear among with other people. Hearing from Ryoma that the rest of the world would follow if this continues, revealing how he got caught up with Digimon, Taiki's group and Ryoma's group join forces to free the kidnapped victims and join the others as they demand answers from a non compliant Old Clock Store Owner. By that time, Chrysalimon Super Evolved to Infermon and overpowering the Hunters' Digimon until Tagiru and Ryoma execute a Double Xros between Arresterdramon and Astamon. With Astamon's fire power, Xros Up Arresterdramon battles Infermon until it turns into the same mysterious entity seen before and combines with others into a blob from which Diablomon emerges. With Yuu, Nene and Kiriha, Taiki forms Shoutmon X7 to aid Xros Up Arresterdamon and destroy Diablomon. However, the mysterious monster transforms into its true form: Quartzmon.
After Baalmon is fatally wounded by Lilithmon, Taiki is instructed by Pharaohmon to use the Sand Zone's Code Crown which rises a pyramid that carries Team Xros Heart and Baalmon away from Lilithmon and her SkullScorpiomon army. Taiki uses his DigiXros to summon the statue of the Digimon Goddess to begin healing Baalmon's wounds. Meanwhile Lilithmon's forces try to break into the pyramid and Team Xros Heart all band together to fight while being unable to Digi Xros. Will they be able to fight in their reduced state and can Taiki save Baalmon!?
Taiki and the rest are transported back to Earth by the DigiMemories of Examon and WarGreymon. Examon proceeds to reveal Bagramon's plan and the forming of DigiMemories. Soon, Yū's Darkness Loader transformed into a yellow Xros Loader as Examon and WarGreymon's DigiMemories revive Omegamon's DigiMemory. Soon, a decisive battle between Xros Heart United Army and the Bagra Army started. Meanwhile, Taiki, Akari and Cutemon enters into DarknessBagramon's body with intention to search for Shoutmon. As they encountering a metaphysical Bagramon with Taiki nearly killed, the Dark Stone purified into Code Crown and brings every digimon including Shoutmon back to life. The Code Crown then sends Taiki and his team members out of DarknessBagramon's body. Guided by the Code Crown, the Xros Heart executes a DigiXros called Final Xros on Shoutmon with all Digimon to form Shoutmon ×7 Superior Mode. Finally, DarknessBagramon is destroyed for good and everything back to normal. Taiki and his friends said goodbye to Shoutmon and the Digimon as they return to the Digital World but has a feeling that his adventures are not over yet.
With Dorbickmon defeated, Taiki and the rest end up on another Land where they managed to free a Lopmon who being chased by three LadyDevimon. Later, Lopmon reveals that the place where they are now is Vampire Land and that many of his kind have been captured to the Land's Death General's castle for some reason. Taiki and Nene decide to sneak into the castle disguised as Lady Devimon, and Cutemon disguised as a Lopmon, to take out the castle's barrier. Found out, things go from bad to worst when Taiki encounters NeoVamdemon (Bagramon's second Death General) as Lopmon manages to destroy the barrier, with Shoutmon ×5 unable to fight the stronger Death General. The battle then took over by Kiriha yet the unharmed NeoVamdemon then uses his Darkness Loader to Forced DigiXros with his Devimon and LadyDevimon armies to assume Darkness Mode before executing another DigiXros with MetalGreymon, leaving everyone, especially Kiriha, an unexpected shock.
Wanting to find out the full story behind the Digimon Hunt, Xros Heart finds a lead in a mythical Digimon named MetallifeKuwagamon. Tagiru's insect-collecting classmate Kaneda enters DigiQuartz with Tagiru and Hideaki. Later on, to Kaneda's dismay, the bug he caught is actually MetallifeKuwagamon who later on takes the boy as a hostage to cover his escape. Eventually, Tagiru and the others find MetallifeKuwagamon with Arresterdramon defeating him while Tagiru saves Kaneda. However, Tagiru realizes MetallifeKuwagamon cannot be captured as the Digimon reveals that his data belongs to an evil Digimon Hunter. Suddenly, before he can reveals his master's identity, an evil being with red eyes and mouth deletes MetallifeKuwagamon before attempting to suck the Digimon Hunters into it. But at the very last minute, Taichi Yagami (who arrives with WarGreymon) and Masaru Daimon (who arrives with ShineGreymon) arrive to the Hunters' aid. With the two youths' help, Tagiru remembers his bond with Gumdramon and that allows Arresterdramon to assume his Superior Mode and destroys the evil being. Taichi and Masaru take their leave, with the former explaining to a confused Tagiru that he will know them soon enough. Meanwhile, while trying to help Nene in Hong Kong's Digi Quartz, Kiriha encounters Mimi Tachikawa and Ruki Makino as they intend to help the two in relation to the final battle about to occur in Japan very soon.
Tagiru is excited about his success at being a Digimon Hunter before the mysterious clock shop owner gives him an invitation to a contest to determine the strongest Hunter. The invitation reveals a bar code which Wisemon read to discover the location of the contest, a distant island. Tagiru, Taiki, Yū and Hideaki all travel to the island where other Hunters are gathered, learning the objective is to capture a powerful Digimon named Volcadramon. However, Volcadramon proved to be too powerful, scaring off Haruki, Noburo, and Ken and overpowering Tagiru and his friends until Kiriha suddenly appears and captures the Digimon. Kiriha leaves Taiki a warning as Taiki speculates the Clock Shop owner's plan. Meanwhile, the old man comments about the hunters to some very familiar guests...
Kiichi who's in the same grade as Tagiru, shows everyone the his pictures of visiting different places around the world. Though their classmates are half in doubt about it, Tagiru learns later that night that Kiichi is traveling via a Locomon. Kiichi invites Tagiru to ride on Locomon, and travel around the world together along with a bunch of other kids from their school. A few days after, the students begin to doze off as Kiichi admits to Tagiru that they been using Locomon to travel on a night basis. Deciding to put a stop to it for Kiichi's own good, Tagiru, Taiki and Yū board Locomon. However, Locomon is derailed by Ren on his Pteranomon before being added to the Digimon Hunter's collection. Kiichi asks Tagiru to bring him along, and get Locomon back with him, while Gumdramon beats Airu's Parasimon and the Hunters escape. In the end, Kiichi and Locomon promise to regulate their trips with the children and their time to sleep, and become allies for Tagiru and Gumdramon.
Akari returns to town to visit Taiki, oblivious to the Digimon Hunts. SuperStarmon decides to capture Taiki and add him to his collection of imprisoned celebrity dolls. He lures Taiki and Akari to a deluxe hotel where he traps them in the DigiQuartz. Tagiru, Yū and Ryouma join forces to save Taiki and Akari, and capture SuperStarmon. Yū and Tsuwamon successfully save Taiki and Akari, the latter suggesting Taiki and Yū DoubleXros Shoutmon, Ballistamon, Dorulumon and Starmon and the Pickmons into Shoutmon X4. Shoutmon X4 defeats SuperStarmon and he is captured by Yū. Akari offers her assistance to Taiki when she is available, and Zenjiro bursts into Taiki's room demanding to know where the Clockmaker is. After the fight, Ryouma tells the Clock Owner about what just happened in DigiQuartz.
At a cute store called the Fancy Shop Dream, Airu Suzuki, along with her Digimon Opossumon, capture a bunch of other Digimon. Finding that all of them are "no good", Airu leaves the Digimon to her teammates. Still feeling down about not being able to reunite with Damemon, Cutemon appears in front of Yū to cheer him up but ends up being targeted by Airu, who wants to add him to her cute Digimon collection. While Yū returns home, with Tagiru and Gumdramon tagging along, Cutemon spots a bunch of pictures of Nene, who has since become an idol in Hong Kong. After falling asleep from their meal, Cutemon, Tagiru, and Gumdramon awake to find Yū gone. Finding Yū at the park where he and Damemon first met, Tagiru, Gumdramon, and Cutemon make just in time as Airu transports Yū to the DigiQuartz. Trying to force Yū to hand over Cutemon, Airu nearly succeeds, until her DigiXros of Opossumon and Candlemon allows them to escape. The next day, after explaining what's happened to Taiki, Yū realizes that Cutemon has snuck out of his Xros Loader when he tries to return him to Taiki. They all run back to the park, where Airu has captured Cutemon and plans on forcing him into her Xros Loader. She is soon joined by her teammates, who formally introduces themselves as Ryōma Mogami and Ren Tobari, before Ryōma Super Evolves Psychemon to Astamon to keep them from saving Cutemon. Both Taiki and Tagiru then Reload their Digimon and digivolve them to OmegaShoutmon and Arresterdramon respectively. While Taiki decides to face Ryōma and Ren alone, Tagiru and Arresterdramon go help Yū save Cutemon. By then, Airu Super Evolves Opossumon to Cho-Hakkaimon to force Cutemon into her Xros Loader. Airu is about to defeat Cutemon when Yū saves him and Damemon appears. Now with the power of digivolution, Damemon digivolves to Tsuwamon and easily overpowers Cho-Hakkaimon, trapping her and Airu in their own trap. After releasing Airu and Opossumon, Taiki, Tagiru, and Yū meet back at the rooftop
After returning to the Real World, finding out that Digimon can be Reloaded outside of DigiQuartz, Tagiru learns of Taiki and Yū's past experience with the Digimon a year before. Inspired to be at Taiki's level, Tagiru returns to DigiQuartz to begin a new Hunt. The two encounter a mysterious shadow behind the abductions of students: Sagomon. Sagomon overwhelms Gumdramon before he and Tagiru are saved by one of the three children, Ryōma Mogami. As this occurred, going to the alley were Tagiru got his Xros Loader, Taiki meets the Old Clock Store Owner and his Digimon Clockmon. The Owner proceeds to warn Taiki not to interfere with the Hunts due to expertise having an effect that would upset the balance of the "game". Though not intending to take part, Taiki promises to interfere if any one gets hurt in the cross fire. Nothing that Taiki has a strong will like Tagiru, the Old Clockmaker leaves, but not before giving Taiki the Hunter's Rulebook, which Tagiru forgot to get. With Yū following him to make sure he does not abuse Digimon like before, Tagiru finds Sagomon in the pool area, where the students are being held. Even after having Gumdramon Super Evolve and DigiXros with MetalTyrannomon to become Metal Arresterdramon, Tagiru still struggles until Taiki shows up with Shoutmon, who pushes back Sagomon with one punch before becoming OmegaShoutmon and DigiXrosing with Dorulumon to aid Arresterdramon. After defeating Sagomon and collecting his data, Tagiru, Taiki, and Yū return to the Real World with the missing students, who have no recollection of their time in "DigiQuartz". Soon after being yelled at by Shoutmon while also being praised him for finding a partner, Gumdramon vows to catch up to his rival before he and Tagiru run back to DigiQuartz and start a new Hunt.
Ending up back in their world, Taiki, Akari and Zenjirō learn that their time in the Digital World was about half a day in human world time and both of Taiki and Akari's family members have no faith on their words. Taiki later hears the voice who had granted him the Xros Loader, though is unable to find it. The next day, Taiki meet up with Akari and Zenjirō, telling them his intention to go back to the Digital World and save their friends over there. The voice eventually respond to his words leading them to it, revealed to be the DigiMemory of Omegamon. After fully materialising Shoutmon and explaining the origin of the DigiMemories, Omegamon reveals he has the power to return Taiki to the Digital World, but Akari and Zenjirō must stay behind. Just then, Tactimon, who was trapped in the real world and attacking the city, uses the electricity to give himself form and chase over Taiki. After Taiki fail to use his DigiMemory in the battle, Tactimon captures Akari and Zenjirō, demanding Taiki to hand over the Xros Loader. However, Akari and Zenjirō's passionate emotions give Taiki's Xros Loader a new power, allowing Shoutmon to digivolve into OmegaShoutmon who manages to destroy Tactimon. Taiki returns to the Digital World with Shoutmon, where his presence is noticed by Nene's brother, Yū, who is seen with DarkKnightmon and says that he wants to battle against Taiki.
Xros Heart find themselves into the Sweets Zone's underground and with the impression that Cutemon's parents are among them, Taiki and others attempt to search for and save everyone only to find themselves surrounded by Raremon. They managed to escape with Nene's Monitamon attack, causing the team to separated into three groups with Zenjirō and Nene learning the Raremon are the prisoners transformed. Furthermore, Cutemon's parents are nowhere to be found as the nearly complete Breakdramon emerges. Shoutmon ×5 is then formed to fight the robotic dragon before Matadormon appears with Cutemon's parents as hostages, forcing Xros Heart to step down with Shoutmon ×5 being attacked nearly to death. However, through his parents' telepathic request, Cutemon heals Shoutmon ×5 as he proceeds to destroy both Breakdramon and Matadormon, with Cutemon's parent being rescued. With the Raremon restored back to their original forms, Cutemon says goodbye to his parents as he continues with Xros Heart to the next Zone.
After a brief talk with Taiki, Nene discovers that her Black Xros Loader no longer works and collapses. Needing to get her some help, the team decide to take Nene to the Monitamon's home in the Shinobi Zone. However, whilst travelling between zones, the group are attacked by Arkadimon and Taiki ends up getting separated from the rest, who thrown away into a dark space. Soon, he is pulled into a strange book and met with Wisemon who explains to him about the Code Crowns and the strange occurrences in the human world. Meanwhile, Shoutmon and the others are trapped in Arkadimon's nest and preventing Arkadimon from consuming them. Taiki soon makes his way in searching for the rest. As Taiki runs into trouble, Wisemon appears to assist Taiki, who then regains his Xros Loader and DigiXros Shoutmon into Shoutmon ×5 while making sure the others are safe. Arkadimon attempts to stop them escaping, but lastly get destroy when strikes by the attack from Darkdramon upon activate his DigiMemory and another from Shoutmon ×5. Lilithmon arrived and get enraged, discovering that Arkadimon was defeated. With Wisemon deciding to join Xros Heart, they arrive in the Shinobi Zone where they are greeted by a clan of Monitamon.
Nene and DarkKnightmon pursue the light that Stingmon is in revealing that he is then healed by the Forest Zone's deity Deckerdramon. Outside the temple, Lilamon mentioning a dance ritual called the Love Love Dance which will open a gateway while Taiki goes after Kiriha and drawing him back to the ruins. In front of a crowd of digimon, Zenjirō and Akari are forced to perform the embarrassing dance and it is working, calling Deckerdramon’s attention to open the gateway. Taiki and his teammates catches the light with Kiriha, Sparrowmon and Monitamon following him while Beelzebumon and some others stay behind to fight Kongoumon. Nene and DarkKnightmon appear before Deckerdramon in an attempt to recruit him and gain the Zone's Code Crown. The Xros Heart arrives and DigiXrossing Shoutmon into Shoutmon ×4 along with Kiriha's MetalGreymon to fight with DarkKnightmon. Reckless against them, DarkKnightmon demanding Nene to perform Xros Open reverting DarkKnightmon back into SkullKnightmon and DeadlyAxemon and later DigiXros SkullKnightmon into SkullKnightmon's Big Axe Mode which then manages to knock down both Shoutmon ×4 and MetalGreymon. Taiki tries to reason with Nene, only to trigger a flashback involving her younger brother, Yū, which then DigiXrossing SkullKnightmon and DeadlyAxemon back into DarkKnightmon. Deckerdramon decided to team up with Kiriha and giving him the Code Crown. Following an attack by MetalGreymon and Deckerdramon, Nene withdraws entering another zone following by Kiriha. Later, the army of GranKuwagamon and Kongoumon is destroyed by Beelzebumon. Xros Heart soon leaves the zone. While going through a portal, a dark energy entangles Taiki as he ends up getting separated from his teammates.
The battle between Blastmon and Nene and Kiriha's forces continue. Meanwhile as Team Xros Heart investigates the commotion, they are attacked by Baalmon who accidentally reveals an old Digimon goddess statue that has been buried. While fighting, Blastmon causes the ground to collapse, making Taiki and the statue to take a tumble deep underground, separating the kindhearted general from his friends. Baalmon then appears before Taiki and says Taiki has been blessed by the goddess and is now her warrior. In response, Baalmon helps lead Taiki from the underground while enlightening him about the past of the Sand Zone and the goddess warriors. Eventually Taiki learns more about Baalmon himself and his tragic past...
Overdoing it during battle, Taiki passes out and Persiamon takes over to care for him. However Akari becomes sad and jealous since that is usually her job. Unfortunately Lilithmon seizes the opportunity to turn Akari's emotions against her and control her, forcing Akari to find the fragment of Code Crown and bring it to her. Meanwhile as Taiki recovers, Lilithmon also unleashes the powerful digimon Daipenmon who nearly wipes out Taiki's forces that Zenjirou is leading. At the very end Nene appears before Kiriha, saying she has decided to team up with him, revealing that she wields a black Xros Loader.
Teams Xros Heart and Blue Flare must protect KingWhamon and the Island Zone's Code Crown from Neptunemon's Seadramon army. Taiki realizes that a DigiMemory can only be used once and summons the memory of MarineAngemon to fight off the Seadramon army. They then take on Neptunmon himself....
Arriving in the Lake Zone, Team Xros Heart quickly discovers that the Bagura Army is present thanks to IceDevimon's frozen victims. After rescuing a drowning Knightmon, Taiki and the others are introduced to the ruler of the castle of the Lake Zone: Persiamon. Meanwhile IceDevimon and his troops attack but when they fail and retreat, the general Lilithmon appears to take over. She then reveals the plan to thaw out a frozen powerful and dangerous digimon. Not only that but Taiki's rival Kiriha is at the castle as well!
As the dark energy ball engulfs Lucemon Chaos Mode and Nene, Sparrowmon tries to grab Nene but fails as the energy digivolves Lucemon into his Shadowlord Mode with the girl trapped in the Gehanna sphere. As Lucemon takes off, Sparrowmon attacks him to rescue Nene as Shoutmon ×4 and Beelzebumon also involving in the fight too. But neither the Xros Heart Digimon or Sparrowmon could stop Lucemon as he siphons all the dark energy from the Heaven Zone's darkness-infected citizens, growing bigger as a result while a Monitamon informs DarkKnightmon on the current situation. While Xros Heart regroups to figure out how to defeat Lucemon, Nene reflects on the time when she was with Sparrowmon. Sparrowmon wakes up in Xros Heart's care as Lucemon starts to absorb the Heaven Zone as Shoutmon ×4, Beelzebumon, and Shakkoumon are unable to stop him. Without the help of DarkKnightmon, Sparrowmon tries another attempt at Gehanna with Taiki using the Patamon DigiMemory so Shoutmon ×4 to support her. When Sparrowmon manages to penetrate the dark energy sphere, she is grabbed by Lucemon just as she almost reached Nene. Lucemon then attacks Shoutmon ×4 and sends him and Taiki falling. Soon, with the mutual standing of both team, Taiki managed to DigiXros Shoutmon ×4 and Sparrowmon into Shoutmon ×5 to fight Lucemon. Shoutmon ×5 manages to destroy Lucemon as the Heaven Zone returns to normal. As Xros Heart are being congratulated by Shakkoumon (and giving Xros Heart the Code Crown in the processes), Nene harvests the remaining dark energy and brings out DarkKnightmon.
As the Disc Zone collapses, Taiki quickly transfers all the Digimon over to Shinobi Zone. However, fragments of Blastmon cling onto some of them and attacks them as night as revealed to Taiki by Wisemon. Beelzebumon soon arrives and DigiXros with Deputymon to destroy the pseudo-Blastmon. Later, Shoutmon gets some personal training from Ballistamon and Beelzebumon in order to prove himself as a strong Digimon, able to become the Digimon King. A Digimon named Tuwarmon appears during the training and informing them that Blastmon's arrival to the zone before leaving. As Blastmon arrives, Shoutmon ×4B fights against him, pledging to protect the people around him. Shoutmon ×4B is then further DigiXros into Shoutmon ×5B and defeated Blastmon while gaining most of his Code Crowns. Meanwhile in a now-ruined Disc Zone, Tuwarmon revealed to be DarkKnightmon's spy, planted into the Bagra Army under the guise of Damemon. As Taiki contemplates his next moves, he hears the melody of another Digimon close to dying.
With OmegaShoutmon trapped, Dorbickmon DigiXros with Fanglongmon to assume his Darkness Mode, and easily reverts OmegaShoutmon to his rookie form. Before Dorbickmon can destroy Taiki and others, Nene shows up and uses a plant-like smokescreen before retrieving the rest out of harm. At her camp, Nene reveals that she and the Monitamon have been disguising themselves as plants to gather information. Meanwhile, Dorbickmon uses the captured Xros Heart member as a bait to force Taki to reveal himself. The next day, Taiki shows up in front of Dorbickmon. However, he acts as a distraction, allowing Dracomon to flood the area while Shoutmon saves their allies. Infuriated, Dorbickmon DigiXros all his minions to become the winged giant Dorbickmon. Safely placing the allies into his Xros Loader, Taiki forms Shoutmon ×5B to fight Dorbickmon but was defeated by Dorbickmon's power. Dorbickmon then grabs Dracomon and attempts to crush him but is stopped by Kiriha, who arrives with MetalGreymon. Standing tough, Kiriha's pride and Dracomon's hope make Kiriha's Xros Loader to shine, enabling MetalGreymon to digivolve to ZeekGreymon who fatally injured Dorbickmon and both teams claim Dragon Land. Before he died, Dorbickmon warned that they will never defeat the remaining Death Generals. Kiriha finally joins forces with Xros Heart under Nene's pursuit.