Robert and his colleague Kay clash with his lawyer Rico Heilmann during the arrest of a young violent criminal. While Kay goes clubbing after work, Robert goes home to his daughters. He is woken up early in the morning: Kay was murdered that night. She was shot with her own service weapon in an abandoned backyard. Why did she have drugs with her? And why does the social worker Theresa think that Kay worked as a nurse? When Robert finds Kay a threatening message from the youth who was arrested the day before, he seems to lose control. His behavior means that department head Katharina has to temporarily suspend him from duty.

Nico Bajetzky, the operator of a scrap yard, is found shot to death in his car on the banks of the Spree. The act almost looks like an execution. The investigators are anything but welcome on the farm of the family business that specializes in electronics recycling. Is it just sadness, or does the widow Daniela Bajetzky have something to hide? Robert Heffler sneaks into the company undercover and learns a lot about the dynamics within the scrapyard family, about envy and resentment. Tom Bajetzky, Nico's brother, comes under suspicion; But Sandro Reichert, the boss of a competing company from Brandenburg, also seems to have questionable motives. Meanwhile, Stella is suspected of dealing weed at school. She remains stubbornly silent about the allegations.