Everybody is mad at Mikey because of the fact that he hasn't done any training ever since the Shredder has been sent to exile. Mikey says that he dosen't need to train because he's The Battle Nexus Champion which is irritating Raph. All of a sudden, Kluh comes to Earth and starts attacking Mikey. The judge for the battle nexus arrives, saves Mikey, and announces that there will be an exhibition match 3 in just 3 days. Worried he might get turned into a turtle pancake, he asks his family to help him train, but Donnie, Raph, and Master Splinter refuse for the way he's been bugging them with his championship. Mikey's last hope is Leo, and Leo promises to help Mikey. 3 days later, the turtles go to The Battle Nexus with Donnie and Raph having high hopes of Mikey getting his butt kicked. During the fight, a wizard that Kluh's father hired is blocking the War Staff's magic, that way Mikey will not be able to port out right when he's about to be destroyed so Kluh can get his revenge on Mikey for taking the championship title. Luckily, Leo's training has paid off for Mikey. Even though he's been severly injured, Mikey manages to fight back and has the chance to finish off his opponent but decides not too. At the end, The Damiyo gives Mikey a medal for his noble act of character. Now Mikey has 2 things that will drive Donnie and Raph crazy, his Battle Nexus Championship trophy and his new medal. Poor Donnie and Raph!