As Danny and Baez try to prevent an outbreak of high school violence, the principal recklessly takes matters into his own hands.
Johnny's dojo class attracts a group of misfits while his son Robby, who harbours ulterior motives, lands a new job. Samantha makes a new friend in science class. Daniel inspires interest in karate from an unlikely person.
Johnny prepares his Cobra Kai students for the next All Valley Karate Tournament and in turn, he is inspired to clean up his life. Daniel is still unaware of his new pupil's background.