Martin chooses three boys to go on the mountaineering expedition, and Rocky, at least, is immediately enthusiastic about the idea. However, Martin withholds one important detail from them at first...

Pierrot and Dickie have completed their training as spaceship pilots and are now looking forward to new challenges. Soon, the two arrive for their first mission, which is to identify an unknown flying object.

Lisa asks a friend from her university days for help, but he is not enthusiastic about her idea to organize an expedition up to the Gran Paradiso.

Lisa is reprimanded by her superior because of the promise she made to Mark.

Having requested a second opinion on his condition, Mark has received the results of the assessment in the mail. When he is finally alone, he opens the envelope with trembling fingers...

Lisa initiates contact with Mark, but he proves to be his usual prickly self and then ends up taking things a little too far.

Lisa, a physiotherapist, starts her new job in an institution for people with learning disabilities. She meets Mark, who is actually just being kept there temporarily and who initially reacts to her in a dismissive, almost aggressive way.

Mr. Lehmann is finally a free man after three years in prison and is out enjoying the fresh air on his racing bike. Is this the happy ending we've been waiting for?

Andrea Bredow visits Mr. Lehmann in prison and says that she believes him. Now, things are turning serious for Judith Lorenz, who is facing a retrial.

After doing a little digging, Andrea is convinced that Judith has told her nothing but lies throughout their whole friendship. And so she decides it's time to confront her.

A year and a half after Judith's resignation and the end of their friendship, Andrea receives an invitation to Judith's birthday party. Perplexed by a strange coincidence she notices, she decides to attend and see what she can find out.

Ms. Lorenz asks to visit Mr. Lehmann in prison, where he gives her a letter to read, as his therapist recommended. In the letter, he begs her to tell the truth and clear his name so that his daughter won't suffer so much.

Andrea learns that Judith is in the hospital and goes to visit her. Andrea can't imagine that Judith has been poisoned as she claims, and it does seem that a lot of bad things keep happening to her.

Judith is quite dismissive of Andrea's husband's attempt to express sympathy, and then makes an impossible request of Andrea. Meanwhile, Mr. Lehmann loses control in prison.

Andrea begins to question Judith's new memories of the incident, and asks her husband about it. When she goes to a bar, she finds Judith's behavior quite worrying.