Sauerland, autumn 1995: In the middle of the forest on the Wilzenberg, a walker finds the body of high school graduate Sonja Risse. However, the fact that the killer left a music box with the lullaby "Hush Little Baby" at the crime scene does not lead to a clear solving. 25 years later, the investigative journalist Stefanie Schneider, known as "Mütze", made a surprising discovery in Cologne. In a disused multi-storey car park, she films an undressed corpse of a man with a music box running next to it! When her colleague Jan Römer, who reported on the spectacular Sonja case as a young journalist in 1995, recognizes the melody from back then, he immediately believes there is a connection. He goes to Wilzenberg with his ambitious colleague to interview Sonja's mother Maria, her former teacher Waldheim and her best friends. The more the journalists compile, the clearer the contradictions and gaps that the investigators should have noticed at the time.
For Marko, life mainly consists of frozen pizzas and back pain. For almost 30 years, the widower has been hauling frozen goods for the company "Eisland" to the front doors of his mostly older customers. When Marko has to take early retirement due to illness, his life gets into imbalance. Thereby Marko has only one goal: his studying son should have it better one day. Lawyer or judge, that would be something. The main thing is no work where you have to wear a name tag. The decease of an old female customer unexpectedly opens up a whole new business model for Marko. Unfortunately, he reckoned without the nosy neighbors. To make matters worse, his own son also finds out about it. Marko's house of cards threatens to collapse. Then he meets his idol Roland Kaiser at the bar.
It's Lene's first day back at work after some time off. Friends and acquaintances, regulars and strangers come to her jazz and blues bar. While Lene is waiting for Danish musician Leif, who is scheduled to perform tonight, the guests discuss all kinds of topics, ranging from pop music by elves and invisible cell phones to maggots eating away at corpses. But what if Leif doesn't show up at all?
Antigua Alemania Oriental, 1992. Patrick Stein y Markus Bach, dos oficiales de policía muy diferentes, se encargan de investigar la desaparición de dos chicas adolescentes en una zona remota del país. ¿Se escaparon de casa o les pasó algo terrible? (Remake de «La isla mínima», España, 2014.)
Christian es nuevo en el supermercado. Se adentra en este universo desconocido con la ayuda de su compañero Bruno, que le enseña todos los trucos de la profesión y se convierte en su amigo. En poco tiempo se enamora de Marion, que trabaja en el departamento de dulces y siempre bromea con él. Pero Marion está casada, aunque no es feliz en su matrimonio.
Olaf intenta hacer realidad sus sueños y, por lo tanto, siempre se mete en problemas con su entorno. Encuentra su mayor obstáculo cuando su padre lo obliga a tener un hijo. Encontrar una mujer se vuelve difícil cuando Olaf se da cuenta de que tienen algo que él no tiene: sentimientos.
