This song is a declaration of love to the area of Germany formerly known as the GDR, with all of its beauty and its contradictions. It's a call for a dialogue between the former East and West, rather than holding onto prejudices.

Arthur now questions Christa Hartmann more thoroughly. Marlis and Gerd find themselves in a severe conflict. Their different views on future and responsibility put their relationship to the test.

Lona tries to learn more about the victim and how the body was discovered, and Elling learns that his wife couldn't have met with her intern that day, as according to a colleague, he was sick.

The ecovillage Sieben Linden, founded in 1980, is setting new standards in sustainable living. Central to its approach are community life and a decision-making culture that grants all residents equal participation and shared responsibility.

The closer the train gets to East Berlin, the more everyone comes under pressure and increasingly loses their nerve. Paul Fuchs is also at the end of his strength.

Susanne Elling comes home unsuspectingly and is puzzled by the guests in her living room. She must have forgotten something...
In the nursing home, Mr. Dreyer is wheeled out onto the terrace. After his caregiver has gone back inside, the murderer strikes again.