ALF is an alien from the planet Melmac who follows an amateur radio signal to Earth and crash-lands into the garage of the Tanners. The Tanners are a suburban middle-class family in the San Fernando Valley area of California. The family consists of social worker Willie (Max Wright), his wife Kate (Anne Schedeen), their teenage daughter Lynn (Andrea Elson), younger son Brian (Benji Gregory), and their pet cat Lucky (whom ALF wishes to consume).