Isabel Kleefeld's crime drama deals with a little boy whose life is in danger after he had watched a road accident. In a small village, the young police officer Marc Fischer celebrates promotion with his colleague Horst Bäumer. Shortly after, he drives under the influence and dies in an accident, whose only witness is seven-year-old Arnie. Bäumer's wife Hannah gets to know the child and tries to reveal the hidden truth. When Arnie suddenly disappears, she starts searching the boy together with the local mailman Enno, fearing someone wants to silence him...