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!

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.

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?

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.

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.

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.

Ms. Bredow comes to have dinner at the house of Ms. Lorenz, who is still in the process of moving into and decorating her new apartment. Away from the office, the two colleagues begin confiding in each other.

Mr. Lehmann does not like that Ms. Lorenz and Mrs. Bredow are discussing their colleague’s illness, and he strongly reprimands them both. In the archive, Mr. Lehmann aggressively confronts Ms. Lorenz…

Ms. Bredow visits Ms. Lorenz, who’s been out sick for four days. She seems disturbed, and does not want to go back to the office. Then she revealed what happened with Mr. Lehmann in the filing room...

Mrs. Bredow is worried because she cannot reach Ms. Lorenz by phone and drives to her place to see if everything’s all right. When she arrives, Ms. Lorenz has just returned from the police, to whom she reported Mr. Lehmann.

The police confront Mr. Lehmann with Mrs. Lorenz's accusation. Mr. Lehmann reacts arrogantly, but privately, he’s worried.

Ms. Gonzor and Mr. Lehmann discuss the complaint that Ms. Lorenz has filed against him, and Ms. Gonzor tells Mr. Lehmann that he will need to stay home while the investigation is taking place. However, he does not want to accept this…

After things become unpleasant for him at home, Mr. Lehmann makes the bad decision of going to Ms. Lorenz's apartment to confront her. His lawyer is concerned that this makes him look quite bad in court, especially now that Ms. Schmidt, his main ally at work, has passed away and can't defend his character.

As the trial approaches, Judith spends more and more time with Andrea, even visiting the zoo with her family. During this excursion, Judith mentions that she once had a daughter.