The song may be about friendship, but German legends Die Fantastischen Vier are eager to show that they perhaps don't always get along, especially when they were asked to collaborate with Clueso.

Sibel wants Christian to leave his wife, but Christian feels that the illicit nature of their relationship is what is keeping the passion alive.

Andy takes us out on the ice to try to determine how deep it is, and then explains the difference between different types of ice skates.

When it's cold enough, the lakes in southern Germany develop a thick layer of ice that is good all sorts of winter pastimes. Cettina talks about the history of ice-skating and interviews an ice hockey enthusiast.

Marga's new friendships continue to develop as she considers her options and tries to determine the best way to take down Mr. Ohrmann. At the same time, she has also begun to sympathize with him.

How long should a relationship last? The two patients in this therapy session present diverging opinions on how love develops.

Marga Engel gives Herr Ohrmann a new concept for how to deal with the existing tenants in an area he wants to develop.

Julia met a really nice guy at a party that the three friends attended. The next day, they talk about how she should proceed.

Marga goes to the university library to try to study cases similar to her own against Herr Ohrmann. Later, she cooks him dinner.

Heike claims that her husband Fahri is refusing to respect her expectations for their marriage, but it seems there may be another reason that she is constantly unhappy.

Marga gets Dr. Gössel to confess that he tampered with Mr. Ohrmann's car. As it turns out, they have a lot in common...

More about the family's history is revealed, and Lilly prepares to go back to the West. When she boards the train, Till gives her a 1989 calendar, which means it won't be long before Lilly can live with them.

Marga is happy to move into the property's guesthouse with Olga, with whom she gets along quite well. The two decide to help each other with their problems with Herr Ohrmann.

Lilly finally makes Katrin talk to her, and Lena tells them about Lilly's mother's escape to the West.

Marga is very upset when she realizes that she has been working for the enemy. Ohrmann's daughter Olga tries to convince her to stay.