Daniel arrives in Los Angeles from the east coast and faces the difficult task of making new friends. However, he becomes the object of bullying by the Cobras, a menacing gang of karate students, when he strikes up a relationship with Ali, the Cobra leader's ex-girlfriend. Eager to fight back and impress his new girlfriend but afraid to confront the dangerous gang, Daniel asks his handyman Miyagi, whom he learns is a master of the martial arts, to teach him karate. Miyagi teaches Daniel that karate is a mastery over the self, mind, and body and that fighting is always the last answer to a problem.