Carson, an old friend of the gang and Rudy's former star student, returns to Seaford. His own martial arts moves prompt Rudy to replace Jack with Carson in the upcoming tournament, annoying Jack.
Phil is mistaken for a hitman. Jack goes under cover as a special agent to try to stop the real hitman. Meanwhile Jerry is trying to help Joan get her job back as the mall security guard.
A documentary film crew from the Karate Channel comes to film a typical day in the dojo. Meanwhile, Milton finally takes a stand against Jerry's recurring pranks by executing the ultimate prank.