Maria Theiss is a good policewoman, but she is unpopular. For a long time she was the "holy virgin", but since she reported her corrupt partner, she has been called "Judas with tits". Now another conflict-laden job awaits her: she is to spy on her new colleague, police legend Edgar Feindt. His partner of many years has mysteriously died. Maria has to shed light on the matter. Does he have something to do with his partner's death? Is Feindt perhaps also corrupt? Or is he taking the law too radically into his own hands? At the same time, the two must also hunt down a serial killer and child molester who is holding girls captive and letting them die of thirst. To make matters worse, Feindt was Maria's trainer and lover..