In Seaford High school the new kid ,Jack meets three boys, Jerry, Eddie and Milton and a girl named Kim. They all do karate and Jack joins Jerry, Eddie, and Milton at lunch, and soon are picked on by Red belts in the Black Dragon Dojo and Jack tries to settle things and gets in a fight with kids from the rival dojo, the Black Dragons, that at the time, Kim was a member of the Black Dragons. Jerry Eddie and Milton learn from their sensei Rudy that the Bobby Wasabi Martial Arts Academy is in danger of closing. So Jerry, Eddie and Milton convnce Rudy to get Jack to join after he crashes through the wall. Rudy lies to Jack and says he will go to juvie if he does not join and helps them get 2 belts. Later Rudy let his secret slip and Jack quits until he hears the disapointment of his friends. Jack joins to win the tourtement. Jack competes against Kim, but after the Sensei for the Black Dragon cheats, Kim quits and does not fight Jack. Jack does a Bobby Wasabi move to win the tournament and keep the dojo running. Also in this episode, Kim from Black Dragon changes to Bobby Wasabi`s dojo.

After Milton almost falls trying to place his spelling bee trophy next to Jack's Gymnastics trophy, he is caught by one of the janitors, who the kids eventually find out is a former sumo wrestler. After getting him fired because Milton asked to see his victory dance,and Milton defends Mr. Nakamura talking the principal by saying things he was not supposed to say, the kids decide to help get him back into wrestling by inadvertently having him wrestle the guy who cost him his title. Meanwhile, Rudy fights with Lonnie from Reptile World for a storage space in the basement of the mall, after the closing of a magic store. Lonnie gets the space but later gets crushed by Nakamura.

Arthur, the obnoxious son of the new mall owner, joins the Bobby Wasabi dojo, and Rudy bends over backwards to please him. But Arthur rubs everyone the wrong way, and after an altercation with Jack, Arthur's dad forces Rudy to kick Jack out of the dojo or he will bring in a wrecking ball and turn the dojo into a parking lot. Rudy proves his loyalty to Jack and the gang by chaining himself inside the dojo. Mr. Turner just brings the wrecking ball to scare them away. The gang does not leave, though, and they get to keep the dojo. Kim tries to get better stories to document on the news team.

Milton prepares for a live-action role-playing battle (L.A.R.P.) but his friends don't want to particpate because they think it's uncool (except for Rudy who thinks it sounds like fun). But after thinking of all the things Milton has done for them, they decide to join him and show up just in time to help him beat the Dark Knights and win the game. Meanwhile, Jerry tries to impress Kelsey Vargas but keeps lying to her.

The Black Dragons want to destroy the mall’s annual Halloween Boo-Stravaganza. Jack assures the others that he’s not afraid of anything, including the Black Dragons. A Clown from Circus Burger causes Jack to flip-out showing that he does have one fear - that of clowns. Now the Dragons will stop at nothing to use that fear against him. Rudy meets a catwoman and tries to find out who she really is. We find out that she's much closer to Jerry than Rudy!

Jerry gets the blame for a prank pulled by Milton and gets a detention on the day of the big tournament his entire family is attending. Milton disguises himself as Jerry and goes to the detention where he confronts the teacher's smug attitude. Rudy has to babysit Phil's goat and develops feelings for it.

Jack enters the Junior world martial arts championships in China.and competes against his cousin Kai. Milton, Eddie and Jerry get lost after trying to find out the meaning of a fortune cookie they got.

Milton thinks that Jack should be the new kicker for the Seaford High football team but he doesn't make it and discovers that Milton can kick the ball really well and becomes the new kicker.

The gang tries to stop Bobby Wasabi from marrying a woman with a reputation for stealing rich karate stars' fortunes.

When Milton becomes school president, he becomes the target for an embarrassing takedown.