While Henning is generally pleased with his popularity in his role as Cop4U at the local school, one student is showing him a little too much attention. Meanwhile at the police station, Lothar is given a tricky assignment.

At his apartment, Henning confronts Rosa about the fact that she’s been lying to him. She admits that she has feelings for him. He rejects her advances and finally takes her home — but she’s unlikely to let go of her crush…

Rosa's mother discovers the bruises on her daughter's arm and calls the police. Katja and Dirk ask Rosa about the course of events and the identity of the perpetrator. The answer leaves them speechless...

Katja and Dirk confront Henning regarding Rosa’s accusation. Meanwhile, Lothar tries to follow up on his internal assignment without his colleagues noticing – but then Nicki catches him in the act.

Lothar comes across some astonishing evidence in his hunt for the person who posted his call online. Meanwhile, Henning is suspended from the force, and Rosa seems to be getting closer and closer to her goal.

Dirk, Harry, and Katja speculate about why Rosa would make up such an extreme story about Henning. Henning himself wants to confront Rosa, but Harry stops him; meanwhile, Dirk and Katja pay Rosa’s absentee father a visit on his ship.

Lothar and Nicki find their suspicions about Commissioner Küppers confirmed. Meanwhile, Rosa's father shows up unexpectedly at the family home.

Before Lothar can confront Ms. Kuppers, she sends him and Nikki to check on Mr. Würfelkrütz, where something is amiss. Meanwhile, Rosa realizes that the seriousness of her allegations and tries to contact Henning.

As Mr. Ellwanger gets caught in the act, Henning decides to meet up with Rosa after all. But then Rosa's father turns up unexpectedly...

All's well that ends well! Rosa admits to having made up everything in order to get her father's attention, which means Henning can be reinstated; meanwhile, Lothar finally cracks his case.

A new start, lonely hearts listings, and secret gifts at the police station—and so begins a new installment of this series.

On a boat in the harbor, two teenagers meet by coincidence and under different preconceptions. One is off to meet a mysterious man who she claims is dangerous, while the other says the boat belongs to his father. Meanwhile, a cop on the night shift tries to sell his old van.

When he witnesses the lovely girl he's just met get shot, Elias calls the police, but he doesn't want to give his last name.

Nina and Paul arrive at the scene and find a man's wristwatch near the victim, who is around the same age as Paul's daughter. She still has her wallet, but it looks as if her cell phone has gone missing.

Mirko, an acquaintance of Daniel's, turns up at the police station with a question concerning a "friend of his" who has lost a gun... At the crime scene, two detectives make it clear to the other officers that they will now be taking over the investigation.