After a colleague's longtime girlfriend is killed in the courtyard of a crowded apartment complex, Freddy and Max are frustrated when none of the residents will admit to seeing or hearing a thing--and their frustration turns to bafflement when they discover the victim was secretly pregnant. Who was the father of the child and why was the victim planning a secret move to Hamburg?

The body of a four-year-old boy is found in a working-class area. An autopsy reveals posthumous injuries. Schenk suspects they're dealing with a psychopath preying on the weak. Meanwhile Max befriends Mirko, an emotionally neglected eight-year-old, he suspects knows more than he's willing to admit. As they investigate the murder, they are drawn further into the world of children's fears and grown-up's dreams.