The supervisory complaint is difficult for inspector Peter Faber, he got into an argument with the police psychologist in the evening – and now shots are fired in Dortmund harbor: Faber is just in time to save one of the two people floating in the water from drowning. The other can only be recovered dead. When inspector Martina Bönisch sees the body, she immediately makes the connection to an old missing person case that had pushed the young policewoman to her limits 14 years earlier. Now that chief inspectors Faber and Bönisch are biased for different reasons, inspectors Daniel Kossik and Nora Dalay are particularly challenged.