Gordon Shumway, last known survivor from the planet Melmac, crash-lands his spaceship into the Tanner family's suburban garage. Willie dubs him "ALF", short for Alien Life Form. After convincing a military officer that they are not harboring a space creature, the Tanners decide to take ALF in as a member of the family.

ALF has a crush on Lynn, so he makes a music video to impress her.

ALF heads for the garage when Kate's mother pays a visit.

ALF submits scripts to his favorite soap opera.

ALF hits his head and is convinced he is an insurance salesman. The Tanners try reviewing past events to try and jog his memory.

The Tanners continue to try and jog ALF's memory, and deal with the police at the same time.

ALF befriends a young Mexican immigrant.