Adventurer/surgeon/rock musician Buckaroo Banzai and his band of men, the Hong Kong Cavaliers, take on evil alien invaders from the 8th dimension.

Philo takes part in a bare knuckle fight – as he does – to make more money than he can earn from his car repair business. He decides to retire, but when the Mafia come along and arrange another fight, he's pushed into it. A motorcycle gang and an orangutan called Clyde all add to the 'fun'.

A former child show host misses the good old days. He and his sidekick from the show are doing a gig when the place gets robbed and the sidekick murdered. The host is the only one who saw the robber well so the robber goes after him.

Toxic waste dumping in a small Idaho town turns a young boy into horrible mutant monster. The town's police chief and a government scientist team up to stop the monster, which is quickly killing off the town's citizenry.

The adventures of a group of teenagers at a drive-in theatre in Texas one weekend night.

Dustin tries to rescue his grandmother from her new husband.