Mick's first case takes him back into the past. Bruno Semmert, who was convicted of the robbery and murder of Tobias Berschel, is released after 15 years in prison and is found dead in Lake Baldeney. Jürgen Berschel, the father of the dead boy, quickly comes under suspicion. But Mick's gut feeling tells him to doubt the evidence. It appears that Mick's old boxing trainer Hacki not only kept him in the dark about important details of the crime, but also Jürgen Berschel.