Maya Kaminski meets Dudek's sister Laura and gains deeper insights into Dudek's motivations. Flashback: Lona and Elling find a connection between the missing children from the home and the four buried bodies from the forest near Marnow. Little Sarah, who escapes from the children's home at night, comes into focus. Sarah remains missing, but the search for her leads Lona and Elling to a shady organization that uses children like goods for its own purposes.

Flashback: Lona, Elling and their new colleague Sam take up the illegal apartment that Sarah has been taken to. Sarah's life is in danger. LKA man Dudek doubts his boss Martin Gruber and tries to break free from his firm grip. He and Maya develop a plan to get to the people behind the attack on Lona and Elling.

Flashback: Lona and Elling have found Sarah. Sarah and Lona grow closer, but fate tears them apart again. With the help of Elling and Sam, Lona mercilessly hunts down the people who are planning something bad for Sarah. Dudek and Maya come dangerously close to the center of the conspiracy. Too close, as it turns out. There is a showdown at Schwerin Central Station.