High school student Lane Meyer sinks into suicidal depression when his girlfriend dumps him for jock Roy Stalin, the high school ski racing champion. Meanwhile, he has to deal with his eccentric family, a tenacious paperboy and an obnoxious neighbor whose mother is hosting a beautiful French exchange student named Monique.

Daniel moves to Los Angeles with his mother, Lucille, and soon strikes up a relationship with Ali. He quickly finds himself the target of bullying by a group of high school students, led by Ali's ex-boyfriend Johnny, who study karate at the Cobra Kai dojo under ruthless sensei, John Kreese. Fortunately, Daniel befriends Mr. Miyagi, an unassuming repairman who just happens to be a martial arts master himself. Miyagi takes Daniel under his wing, training him in a more compassionate form of karate for self-defense and later, preparing him to compete against the brutal Cobra Kai.

As part of a deal with an intelligence agency to look for his missing brother, a renegade pilot goes on missions with an advanced battle helicopter.