“In 3 days you’ll be dead” – spam, a stupid joke or deadly reality? This is the question Nina Wagner and her group of friends ask themselves when they receive this anonymous text message.

The relaxed atmosphere the four friends had been enjoying after having passed their final secondary school exams comes to an abrupt end when the threat becomes true. Nina’s boyfriend, Martin, disappears from a party one night. On the following day his body is fished out of the lake and the police have no leads. The second murder is not long in coming. Nina is the only one who has been able to catch a glimpse of the psychopath’s face. She knows this face, but from where?