Maren Eggert and Matthias Brandt star in this drama about a family, trying to start a new life, which fails because of the mother's mental disease. After a difficult time, Martina and Stefan Schneider move into their new house. Although the couple and their son Daniel seem to be happy, Martina suffers from a mental disease. When Evelin and Klaus Garbers become their new neighbors, they soon make friends with the Schneiders. However, Martina thinks that Evelin and Stefan have an affair, so she gets into a panic when Evelin announces her pregnancy. Martina believes that her husband is the baby's father...

Katharina Hendriks loves her job as headmistress of a vocational school. However, cutbacks threaten to spoil her job, as does the arrival of her brother Erik as a guest teacher. Their visions clash and this has consequences not only for the atmosphere, but also for the pupils.

A landslide in the Harz releases a corpse. Commissioner Frank Koops leads the investigation. Vanessa Riemann, tourist guide and marksman from St. Andreasberg, sees a lot of money in the backpack of the two hikers and attacks. On her breakneck escape through the undergrowth she is shot and bleeding in the arms of her brother Marco. In her backpack this finds 1.4 million euros – the booty from a bank robbery.

Maren is overwhelmed by the burden of motherhood. When she finds out that her "son" is secretly transgender, she anxiously avoids any open conversation. Soon enough she has to face the fact that there is no way of ignoring her true child...

Arne comes into the family of an old friend of his father as a foster child. He hopes to find closeness and security with Harald, his wife Elsa and their children Hans, Wiebke and Lars. But he finds it difficult to integrate - his trust in the community has been shaken by his great misfortune. However, he feels attracted to Wiebke, even though she keeps distancing herself from him. After Arne's clumsiness causes the sailing boat that the young people had restored together to be wrecked during the launch and he is supposedly a traitor after a joint theft, a rift occurs with Wiebke and her brothers. Harald is also deeply disappointed in his foster son.

Hardly released from prison, the real estate swindler Thomas tries to get rid of his half-brother Roland. Roland has Downs Syndrome and his mother has granted him a lifelong right to live in her house. But Thomas wants to sell it as quickly as possible.