Marc Schrader, a rookie cop caught red-handed with drugs in a police raid of an illegal rave, joins a homicide investigation conducted by Chief Inspector Minks. The victim is a naked young woman with the skin stripped off her back, killed as she staggered into traffic. As Schrader and Minks investigate the murder, the case is complicated by a finger found in the stomach of the victim. Forensic examination proves the finger belongs to Nobert Günzel, who was previously convicted of rape and assault. The police raid Günzel’s residence, and discover a blood-stained table with restraints and bits of human flesh in his basement. They also find video equipment and preserved, tattooed skin from the victim’s back. Soon, they found dead bodies buried in the garden. Günzel then goes missing.

Martin is the ambitious one in the family. He is poised to start on his doctorate, when he is diagnosed with testicular cancer and all his future plans begin to unravel. The removal of one testicle reduces the most immediate threat, but the cancer has already spread and Martin's doctor argues for an operation that would save him, but could also castrate him.