The body of old Theodor Reifenrath is found in Mammolshain in the Taunus. Accident or Murder? Because the safe is open and empty, inspectors Pia Sander and Oliver von Bodenstein start investigations. In the dog kennel in front of the house, they make a horrifying discovery. Alongside to a nearly starved dog, she finds human bones in the ground. Three women's bodies are recovered by the forensic experts. But who are the murdered women? The dead man and his deceased wife Rita had used the large house by the lake as a kind of children's home and had raised many foster children here over the years. However, the two were not loving foster parents. Rita has been missing for many years. Probably suicide, but her body was never found. The investigators are concentrating on the foster children, who are now all grown up and in the middle of life. The pattern of killings is striking: Apparently the perpetrator always kills on Mother's Day. And that day is near.

17-year-old Paul likes strange things: stealth trails and abandoned buildings, whispered conversations and left-behind bags. Besides that, he seems to be a young man without qualities. His mysterious nature catches the eyes of his classmate Dala and his art-loving teacher Mr. Bulwer, both seemingly driven by hidden desires. Then a boy’s dead body is discovered in the forest...

Weimar, 1921. The life of 20-year-old Lotte Brendel seems to be predetermined. Her father sees her as a future wife and mother on the side of a man who is to take over the parental carpentry business. But the idiosyncratic Lotte joins a group of young artists against the will of her family, applies at the Bauhaus and is accepted. The Weimar Bauhaus, under the direction of the visionary Walter Gropius, aspires not only to combine arts and crafts, but also to find the place for the "New Man". In the student Paul Seligmann Lotte finds a supporter and her great love.

The everyday lives of teenagers, coming from various social backgrounds. For them, sexuality has become a substitute for love, resulting from emotional neglect.

In a small town in Northern Germany, a penniless German veteran is offered a job as a deliveryman by an alcoholic Turkish entrepreneur, through which the former meets the latter's wife.