Paul Kersey is again a vigilante trying to find five punks who murdered his housekeeper and daughter in Los Angeles.

Their car breaks down and four friends find themselves stranded at The Lost Oasis, a strange museum run by the friendly Mr. Slausen. Even though they are warned not to, the teens explore a house nearby and learn that it belongs to Davey, Mr. Slausen’s insane brother. Davey has a knack for making mannequins. In fact, his house is filled with them. Davey’s enthusiasm shows when starts adding the teenagers to his collection.