Our heroes are back on board the ferry looking for the thieves. Just as they are about to give up, they notice some unusual behavior. Are they on the right trail?

Nina has to move to Italy with her family and has had a hard time saying goodbye to Max and her friends. Suddenly, the Peppercorns have a pickpocket to catch.

The bus finally reaches the hut which is to be their base camp. Mark reluctantly allows himself to be helped off the bus by one of the convicts, and Lisa discovers that Rosi is anything but well-equipped for the trek up the mountain.

Martin, Lisa and the boys are now on the bus headed for the mountains. Mark makes himself unpopular again, and then it turns out that they have a stowaway on board...

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.