A scary serial killer is around: he cuts off young women's tongues. Commissioner Michelle Eisner notes striking similarities between the three victims so far: They were customers of the "loverboys". Behind this is a callboy ring, which also includes the attractive and inscrutable Lanou. Michelle reluctantly accepts the help of the experienced police psychologist Busch to clarify the case. He is a master at thinking his way into the psyche of the perpetrator. The main suspect for him is call boy ...