As the students of the Bobby Wasabi Martial Arts Academy fight to save their dojo, luck puts them in the path of super skater and martial artist Jack.

Milton climbs the trophy cabinet to put his spelling bee trophy next to Jack's martial arts one. He falls and is rescued by janitor Nakamura, who turns out to have been a sumo champ.

Turner, the bratty son of the mall's security officers, catches Eddie on video practising for the school dance with a dummy and blackmails him into playing pranks on the others.

Arthur, the obnoxious son of the mall owner, joins the dojo. He upsets everyone, and after a row with Jack, his dad tells Rudy to get rid of Jack or he'll turn the mall into a car park.

As Milton prepares for his first LARP battle as King, his troop abandons him. Rudy comes to his rescue, then Jack and the gang decide to help as Milton's always been there for them.

Rudy throws himself a birthday party, and Jack brings Bobby Wasabi along as a surprise, but Rudy doesn't recognise the now overweight star, flips him, and gets himself fired.