Two pairs of friends traversing Texas goes to a nearby bar. Service walking tour with them in the museum of crime and fear. Capitan Spaulding (Sid Haig) tells them about the legendary death even psychopathic killer, Dr. Satan, who was hanged on one of the trees. Young people wishing to extreme sensations, intend to go to the indicated place. Along the way, take an eccentric hitchhiker. It was from that moment begins the gruesome course of events ...