Henry Marshall is a greedy man who has paid for his greed with a prison sentence, but has yet to learn his lesson. His life abruptly changes when he encounters visitors from another planet who instill in him a new sense of compassion for others.

A chaste co-ed is enveloped by a strange power that gives her an insatiable sexual appetite, which is perpetuated by encounters with consenting men who, after making physical contact, morph into her body and disappear.