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.

A brutal attack on the homeless Lennard in downtown Frankfurt links the fate of three women: Irina, a 28-year-old nurse, has witnessed the violence. The young Sam lives on the street. She was protected by Lennard after she was beaten up in search of food. The single mother Anne is from the clouds when her 18-year-old son Rio is led away by the police. He is accused of involvement in the violence against Lennard. This is hard to understand for Anne; she struggles to get her son to talk.

Morden im Norden is a German Police that has been broadcast by Das Erste. The show is set in Lübeck, Germany Morden im Norden is part of a series of commonly branded shows with similar themes called "Heiter bis tödlich".