Jack, the new kid at school, makes friends with Jerry, Eddie, Milton and Kim. who all do karate, joins the Bobby Wasabi Martial Arts Academy, and competes against their arch rivals from the Black Dragon dojo.

The kids discover that a school janitor was once a sumo wrestler and try to help get him back into wrestling. Rudy fights with Lonnie from Reptile World for a storage space in the basement of the mall.

The crew bands together to obtain an embarrassing video of Eddie before it goes viral on the internet.T Lonnie's pet iguana eats Rudy's prized grain of rice.