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?
Former East Germany, 1992. Patrick Stein and Markus Bach, two very different police officers, are commissioned to investigate the disappearance of two female teenagers in a remote area of the country. Did they run away from home or did something more terrible happen to them?
Christian, a reclusive young man from Leipzig, gets a job working the night shift at a big-box store. He's trained to stocks goods and operate a forklift by Bruno, a wistful former truck driver, who introduces Christian to a colorful group of overnight workers, including Marion, with whom Christian develops a troubled infatuation.
Olaf tries to make his dreams reality and thereby always gets into trouble with his surroundings. He meets his biggest obstacle yet when his father pressures him into having a child. Finding a woman becomes difficult when Olaf realizes that they have something he doesn't have: feelings.
