Yuuno Scraia is a mage from a distant planet working to fix the problem he started when Jewel Seeds were accidentally spread around the world. In a failed attempt to seal a seed properly, he winds up on Earth in the form of a ferret. However, his battle with the seeds did not end upon reaching the Earth and he needs somebody else's help to seal the seeds for him. Takamachi Nanoha hears his telepathic cries for help and comes to his rescue. When she is given a pearl known as the Raging Heart she is able to transform into Magical Girl Lyrical Nanoha and wield a staff to fend off the evil that lies within the Seeds. In order to help Yuuno complete his mission, she needs to seal all 21 Jewel Seeds away, but Fate may be playing a hand in the matter to prevent Nanoha's goals.
Raising Heart and Bardiche demand a new and dangerous modification to their design.
Nanoha reaches Vivio, but Quattro taunts the two, and Vivio activates a rainbow shield, which Quattro calls the Saint's Armor, an extremely powerful shield. Meanwhile, the barrier around the building where Teana is fighting is broken, after Teana somehow managed to survive assaults from three Numbers, and she then planned to completely finish off the three Numbers. Subaru is losing her consciousness after a heavy attack from Ginga, but is recalled by Mach Caliber and some thoughts in her flashback. She then activates her full drive for the final duel.Watch Now:Amazon
This episode explains the past about Regius, Zest, with Ginga and Subaru's Mother, and Lutecia's Mother, who were the officers under the command of Zest. Due then appears to assassinate Regius in front of Zest, Zest then destroys her somehow. Erio and Caro manage to overcome Lutecia and Garyū. Fate has troubles fighting her battle, but finally wins because of Erio and Caro's words. The terrorists are finally all captured. The only ones left are Quattro and Yurikago.Watch Now:Amazon
The Final Limiter of the dangerous Blaster Mode of Raising Heart is released. The final battle between Nanoha and Vivio, with Quattro behind, will be finally decided.
Hayate's condition worsens, and the TSAB corner the Wolkenritter.
A masked man appears to help the Wolkenritter, whose artificial nature is revealed.Watch Now:Amazon
Subaru Nakajima and Teana Lanster are taking a test to increase their rank from C to B. During the test, Nanoha, Fate, Hayate, and Rein observe their progress. Near the end of the test, Teana injures her ankle, but Subaru has a plan to complete the test in time.Watch Now:Amazon
From Yūno's research, Yurikago is expected to be unstoppable if it reaches orbit and absorbs the power of two moons. Nanoha and Vita are intruding into Yurikago. Hayate is trying to deal with enormous amounts of gadgets. Fate is on the way to Scaglietti's hideout. Signum and Rein are going to battle Knight Zest and Agito. The forwards are dealing with the ground-attacking enemies.Watch Now:Amazon
The last of the terrorists are secured, and Vivio is back to her normal self. Chrono's fleet prepares to destroy the Yurikago. Unfortunately for Nanoha and Hayate, Yurikago goes into self-destruct mode, while locking them in with anti-magic fields and heavy blast doors. Meanwhile, Fate finishes off her work in Scaglietti's lab, just as the whole place starts to cave in. It's a race against time for the Forwards to rescue their mentors. How will it all end?Watch Now:Amazon
The main point is that Nanoha and Fate have adopted Vivio, the girl with the Relic as their child.Watch Now:Amazon
The episode explores the lives of the characters as they go about a normal day, training, etc. The episode also gives some insight into the Numbers.Watch Now:Amazon
After all the TSA Land Headquarters, including Sixth Mobile Division, is completely defeated by Jail Scaglietti. Many of officers are injured. Vivio and Ginga were captured. Sixth Mobile Division is now unable to be the HQ anymore. Hayate decides to move all the units on to Arthra. It is also revealed that Nakajima family had adopted Ginga and Subaru a long time ago since they still were an experimental Cyborg Type-0 (Initial model of Numbers). Although they still needed the maintenance treatment like the other cyborgs until now, they were still treated kindly as normal girls.Watch Now:Amazon
While Chrono researches Graham, the masked man- well, two of him- complete the Book of Darkness at great cost and frame Nanoha and Fate for the crime.Watch Now:Amazon
Nanoha and Fate meet Hayate, and the TSAB realize that the Book of Darkness is going to kill her.
Everyone is under attack, and Hayate comes to help. Lutecia and her companions come to get the relic. When they retrieve the relic case, they open it only to find something unexpected inside.Watch Now:Amazon
Explained how Agito joined Lutecia and the reason why Hayate created Mobile Section Six.Watch Now:Amazon
Subaru and Teana are informed that they have failed their promotion exam, but are given another chance by Nanoha and Reinforce to take the exam again in a week. In the meantime, they are told about the Sixth Mobile Division, which is a special division about to be formed and led by Nanoha, Fate, and Hayate. Erio and Caro make an appearance and meet for the first time.Watch Now:Amazon
Sixth Mobile Division is engaged battle with Scaglietti's group of terrorists. Vita is dueling Zest. Nanoha and Fate have just gotten their devices back from the forwards, but at that moment, Subaru felt something wrong about Ginga.
Nanoha and Fate fight the much stronger Wolkenritter.Watch Now:Amazon
After Subaru recovered from her injuries, she moved onto the plan for Mach Caliber to be powered-up in order to endure her cyborg power. At that time, Scaglietti and his comrades are working on the next step of plan involving power of Vivio. It is also shown that Ginga has become No.13 somehow.Watch Now:Amazon
Teana wakes up in the infirmary many hours after being on the receiving end of Nanoha's attack. She and the other young recruits learn about Nanoha's past and how she almost died several years ago on a mission due to having overextended herself, causing Teana to understand Nanoha's training methods.
Fate's mother, the real villain, is revealed just as the Time-Space Administration Bureau arrives.Watch Now:Amazon
Hayate is engulfed by the Book's power. Chrono confronts Graham on the past and gets a new weapon.Watch Now:Amazon
Although the danger is averted, the threat to Hayate's life remains. In view of this, Reinforce makes a fateful choice.Watch Now:Amazon
Hayate's dream of this new unit has finally been realized and the training begins for the new recruits. New characters are introduced which gives insight to the new villan's plot of the Lost Logia named Relic.