After a week-long search, 15 years old Nicole Ulmer is found dead in the forest, apparently victim of a violent crime. From the appalled father, Klaus Ulmer (
Michael Wenninger), chief inspector Klara Blum (
Eva Mattes) and Kai Perlmann (
Sebastian Bezzel) get to know, that Nicole lionized good looking Holger Buchek (
Stephan Baumecker), at whose family she worked as a babysitter.
Not only Klaus, but also his brothers Herbert (
Rainer Piwek) and Peter Ulmer (
Max Gertsch) remain convinced, that Bucheck is the death of Nicole. On the other hand, Herberts daughter Jessica (
Janina Stopper), Nicoles best girlfriend, refuses to tell Klara about Bucheck or Nicoles other friends.
Actually Holger Bucheck delayed nearby the crime scene. But while Klara and Perlmann are investigating against him, Holger Bucheck disappears without leaving behind some news or hints. And Klara more and more frequently gets anonymous messages with mysterious links. She quickly finds out, that Jessica has to be the sender. Jessica seems to depart from the conspirated family community of the Ulmers more and more.
With conviction, that Jessica is the key to the mystery about death of Nicole and disappear of Bucheck, Klara attempts to interpret the mysterious signs.