Nine-year-old Nikolas disappears without a trace and the police fears that this might be a sex crime. The profiler Claudia Meinert comes across inconsistencies in her conversations with the boy’s parents, and the mother, in particular, seems to be hiding something. When a video then appears of Nikolas in handcuffs, the trail leads to the 13-year-old Leon. Now it is up to the psychologist to gain Leon’s trust and solve the case. But the boy begins a game of cat and mouse with the investigators and the family that could lead to a catastrophe for everyone involved.