His first case leads Mick to the past. Bruno Semmert, who was convicted for the robbery and murder of Tobias Berschel, is pulled dead from the Baldeneysee after spending 15 years in prison.
In Mick's next case the dead body of a man is found in a Santa Claus costume. Mick and his younger colleague gradually discover that the deceased has led a double life.
A slightly different management training on the upper floor of a prestigious bank, fought with paintball weapons against burnout, is stopped when someone gets killed.
The drowned body of 32 year old son of entrepreneur Jonas Breitkamp is found, after having resumed contact with his blind father after 15 years of silence.
When the teacher Julia is murdered on a cuddle party by a strong narcotic, which the killer has put into her nasal spray, Mick and Andreas are confronted with a whole new kind of closeness.