Two sisters' lives are in limbo. In their youth, Nene and Ava were a singing duo. Now there is a child, a job at a café, a boyfriend, and their mother, who is still critical of them. One sister secretly arranges a gig for both of them, and the other smashes her life to pieces because of a feeling. Suddenly it seems possible and necessary to leave one's comfort zone.

Pola investigates on her own after her friend Tina has disappeared without a trace after a blind date on the Berlin Museum Island. Tina's profile on a dating portal finally leads Pola to her lover Sven. At the same time, Tina's husband Karl receives a sex video featuring Tina and Sven. A short time later, Sven is dead, and the bound Tina is released from his apartment. Everything points to Karl as the culprit.

It's no surprise when Karo is fired. She is loud, over-emotional and egocentric, more so than the average Berliner wise-ass, says her best friend Anna. Karo is not one to give up easily, though: she opts for radical change and goes into therapy. Although her therapist advises her to keep calm, Karo throws herself into it.

In the middle of the night, Miko wakes up terrified due to a terrible nightmare about him being haunted by zombie creatures, then he hurries up to his mother searching for safety. The mother calms him down to get back to sleep again, when he decides to challenge his nightmare till the end. There, he gets to know Zombriella, and creates a strong friendship that helps him to overcome his fear from zombies, which also enables him to overcome falling into his brother Steve pranks.