Ms. Bredow confronts Mr. Lehmann about his inappropriate remarks toward the new colleague, but he accuses her of professional negligence. Ms. Lorenz takes Ms. Bredow’s side.

It’s Judith Lorenz’s first day at the Hanover Health Department. Her new colleagues approach her openly and with interest. But Mr. Lehmann makes an inappropriate comment to her at the very first chance he gets.

Heidi now learns the entire story from her grandfather about her father’s devastating accident. She comforts him, and promises that she will always stay with him.

Heidi runs to her grandfather in tears because she can't believe what people are saying about him. Is he really to blame for the death of Tobias, Heidi's father?

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.

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...

Heidi and Peter manage to trick Karl and Theresa into telling them where Peter’s treasure chest is hidden. They bring the chest back to the tree house. But someone has been spying on them!

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.

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

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 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.

Pepe wants to make peace with his aunt Yara, so he shows up at her shop with a bouquet of flowers. Unfortunately, it seems they don’t agree on anything — including whether it’s better to live in the city or in the countryside.

The treasure hunt can begin! The two teams have been given different clues by Karl, and are now setting out on the adventure.

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.

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...