Dr. Roger Girard is a rich scientist conducting experiments on head transplantation. His caretaker has a son, Danny, who, although fully grown, has the mind of child. One day an escaped psycho-killer invades Girard’s home, killing Danny’s father before being gunned down himself. With the maniac dying and Danny deeply unsettled by his father’s death, Dr. Girard decides to take the final step and transplant the killer’s head onto Danny’s body.

Lieutenant Ted Jackson spends his lat day on active duty in the Navy disarming an underwater mine. While disarming the explosive he sees what appears to be a sunken ship. Overcome with curiosity, he investigates and finds a treasure chest filled with what he thinks are Spanish gold coins.

A jazz musician falls in love with a comatose woman at a carny sideshow and takes her to his mansion to join his cabinet of sexual curiosities.