Milton's life is saved by the school's janitor, who turns out to be a former sumo champion. Rudy and Lonnie fight over a storage space in the basement.
Jerry signs the gang up for a dance competition, except they can't dance. When his new dance troupe betray him, he must quickly teach the group to dance. Rudy and Marge make a product called the pocket ninja.
Pop sensation Ricky Weaver comes to the school for a concert after Kim won a contest, but when Jack warns Kim about Ricky's plans she doesn't believe him. Rudy, Milton, Jerry and Eddie form a boyband called "Black Belt Boyz".
After taking an improv acting class, Rudy auditions for a role in a commercial. However, Jack unintentionally sabotages the audition, landing the role for himself. Kim and Eddie help Milton bake a cake after he fails the class.
Milton falls for a girl named Julie, who's uncle happens to be Ty, the sensei of the black dragon dojo! Jack and Kim try to resolve the feud between Rudy and Ty. Jerry and Eddie compete in a rap battle.
After Milton accidentally stops a robbery at the mall, he becomes an honorary mall cop, but this causes trouble when he starts to betray his friends. Jack and Kim try to teach Rudy how to skateboard.
Milton pulls a prank at school, but Jerry takes the blaim, landing him in high security detention. The gang must find a way to break him out, so he can compete in a karate tournament that his family have come to see.