The series centers on brothers Boomer and Brady (Doc Shaw and Mitchel Musso), a pair of 16-year-old fraternal twins (one African-American and one Caucasian), who were raised by their aunt and uncle in Chicago and live a normal existence. However, when Mason, the royal secretary to the throne of the island of Kinkow, arrives at their high school, they learn that they are the heirs to the king's throne of the island, and after Mason tells Brady and Boomer of their lineage, they begin to realize that their lives are about to change dramatically. After making the discovery, the brothers relocate to Kinkow, an American island to assume their roles as the joint kings of the island nation, which has many odd customs and superstitions – while trying not to cause problems. Boomer and Brady's efforts are often aided by Mikayla, Mason's teenage daughter and hindered by Lanny, a disgruntled cousin, who's out to sabotage the boys and take the throne for himself. They are also teamed up by Richard, an orphan king who helps Boomer and Brady.
Mason's brother Jason visits, but Mason isn't so welcoming due to an incident when they were kids. When the kings make Jason head guard, Mason quits and drowns his sorrows in eating. But when the Tarantula people try to roast Boomer alive, Jason cowardly runs off and it's up to Brady to convince Mason and his pregnant self to come back and save Boomer. When Mason arrives, he and King Brady are captured by tarantula people. The Jason's water skuter falls on two tarantula persons, and Jason falls on other two.
Boomer, jealous of the attention Boz is getting, enters the Jikki Kiki dance contest, and picks Boz as the second dancer, believing it an easy win, but when Boomer discovers that Boz is a great dancer, a rivalry develops between the two.Watch Now:AmazoniTunes
When Mikayla’s watchful eye keeps Brady and Boomer from getting into mischief, they host an island-wide search to find Mikayla a friend to keep her busy. The Kings soon regret the set-up when her new friend’s ‘beauty over safety’ mantra, puts all of their lives in danger.
Boomer and Brady are flattered when a pair of cute Queens from the neighboring island compliment their latest ridiculous invention and ask them to be the Kings of Sununu. However, the Kings soon realize that the Queens and their kingdom are victims of a dumb-curse. In order to help cure the entire island of stupidity, Boomer and Brady must solve the Statue's riddle. When Brady gets the riddle wrong so the girls could still admire him and Boomer, the Statue puts the dumb-curse on King Brady, forcing Boomer to get help from Mason, Mikayla, and Lanny to solve the riddle by sunset or else they will be dumb-cursed.
Zadoc's minions capture Lanny and try to squish him with a huge rock. Lanny hands the throne back to Boomer and Brady. Mason goes after Zadoc and sees Boomer and Brady fight and defeat Zadoc and realizes that maybe they are the kings of legend.Watch Now:AmazoniTunes
While trying to prove that they are the Kings of Legend, Boomer and Brady accidentally bring Zadoc, an ancient evil statue, to life, consequently putting the entire island in extreme danger. The twins cede the throne to Lanny for the better of Kinkow and depart on a balloon voyage back to Chicago for good, until the balloon catches a wind and sends them plummeting straight to the Dark Side of the island.Watch Now:AmazoniTunes
Brady and Boomer try to recover a lost medallion that is sacred to the island but Brady, along with Mikayla, is kidnapped by the Tarantula people. Meanwhile, Lanny embarrasses Mason by showing an old workout video that features him in it.Watch Now:AmazoniTunes
Boomer and Brady meet an odd creature in the woods named Ogie (Doug Brochu). But Brady is jelous of the Ogie and is mean to him. Brady fills a void by being Lanny's friend, but Lanny's plot is to kill him. But when Boomer is invited to a feast, he isn't going to a dinner; he is dinner—or so it seems.Watch Now:AmazoniTunes
Brady and Boomer learn being king of the island does not meaning being king of the beach when a punk surfer tells them they can't be on is beach. So, Brady challenges him to a Surf off so he can claim the beach back. Brady and Boomer get help from Mason who was once a professional surfer himself.Watch Now:AmazoniTunes
Brady and Boomer are just to ordinary twins. Or, so they thought. They soon learn that thier parents were king and queen of a small island and they are next in line to rule. But,thier distant cousin is planning to stop them from being kings. Part 2 The twins must save thier island from an errupting Volcano that they awakened. To do this they must cross into the dark side of the island and find a replacement rudy which is a task imposible to do. Lanny tells the villagers that Brady and Boomer are dead so he can become the next king.Watch Now:AmazoniTunes
The head chef quits when he is ordered by King Boomer and King Brady to prepare a steak cake when he was supposed to be making a very important meal for a giant ogre who is about to wake up from annual 10 year sleep, and when the ogre wakes up and demands food, the kings have to make a dish for him to save the island from his wraith.Watch Now:Amazon
Brady tries to unite two conflicting tribes to impress Mikayla, but things didn't go as he planned to be.Watch Now:Amazon
When Mason thinks Boomer's club is too rowdy, he takes over as head bouncer, but starts to keep the party out. In order to get Mason away from the club, the Kings lead him on a wild goose chase leaving the club wide open and vulnerable to a mythical human-like sponge creature named Damone (played by WWE's "The Miz") who absorbs everyone's confidence.Watch Now:AmazoniTunes
Lanny lures the kings into the domain of the Nanju Warrior tribe, which are beautiful young women who have mastered the areas magnetic fields and appear to nearly fly. Unfortunately for Lanny the tribe has high respect for the Kings of Kinkow and it winds up that Brady goes on a date with one of the leaders, Sabrina who is Mikayla's rival from their fight school days. When Mikayla refuses to duel with her Sabrina kidnaps Brady and cages him high in the trees in a trap that is about to fall to his doom unless Mikayla fights. While the two girls battle on land, tree and air, Boomer rescues his brother.
The kings discover that they are about to be forever remembered by their Chicago high school class as having thrown the worst party ever. Against Mason's advice they bring the entire class to Kinkow for the best Beach Party ever. Lanny switches beach signs and the party heads for the hunting grounds of the giant Kinkow Sand Maggot who has its own ideas for party snacks.
When two moons appear, the kings meet the ghost of Malakai, the first king of Kinkow, who explains that an evil twin will destroy the island. After interrogating every twin on Kinkow, Boomer and Brady begin to turn on each other. Following Lanny's advice, the kings journey to the dark side to evil kings castle to sit on the evil throne and learn the truth. The prophecy comes true when the evil king is revealed, putting Brady under a spell and morphing him into evil Brady. With Mason and Mikayla in tow, Boomer heads to the dark side to save his brother and the island from sinking into the seas. Meanwhile, following a dream where she kissed Brady, Mikayla believes she may have a crush on him. Her friend Candace tells her that she does. Later when heading on with Boomer and Mason to save Brady from the evil king Kalakai, an evil Brady engages Boomer in a sword fight. Just before Brady can finish off Boomer, Mikayla gives him a long kiss, breaking him from Kalakai's spell. Together Brady and Boomer use their special rings to defeat Kalakai. Brady takes Mikayla's hand and asks what's next. Mikayla in turn tells Brady that the kiss was just to save him and it was for the love of her country, and walks away. It is still implied that Mikayla may still actually love Brady but just simply told him that the kiss wasn't about that. Brady, Boomer, and Mason follow Mikayla back to the castle where Brady claims that "she so loves me."Watch Now:Amazon
When the castle mysteriously explodes, Boomer and Brady are taken to court and forced to relive their most embarrassing and heroic moments through video clips when they try to prove to the jury that they are not guilty of the unlikely event.Watch Now:Amazon
When Brady overhears Candace gossiping with Mikayla, Candace states that Mikayla said that she will never date him, since he is immature and will never grow up as long as he is the king of Kinkow, Brady leaves the island to go back to Chicago and vows to never come back until he can prove himself to be worthy of Mikayla. Boomer finds out about this and tries to follow Brady. But when a storm hits Kinkow sending people from the neighboring island of Mindu to them, it forces him to stay. They find the young king of Mindu has the Kinkow birthmark on his bellybutton which means he is also the king of Kinkow. It reveals that the boy is Brady and Boomer's long lost triplet brother, Boz.Watch Now:iTunes