Ellen Norgaard's first day back at work after maternity leave ends in disaster: Her son Jesper is kidnapped from daycare.
The architect Sascha Hoerne was crushed and then drowned. His death shakes the Sievers family. The father-in-law had big plans with him and his future wife is pregnant by him. The brother-in-law is under suspicion.
Danish rescue divers and a dead woman puzzle the police. Ellen Norgaard suspects the body is her mother.
Karin is asked by Brendal to help a friend of his who was convicted of shooting her lover. Karin doesn't believe the woman's story of self-defense, so both the German and Polish police try to work out what happened.
Julia's death upsets the family, Stefan doesn't accept it and Karin tries to be distracted working. Meanwhile, the owner of a restaurant is the victim of a fail robbery but the victim and the perpetrator finally end up losing their lives.
Stefan hasn't heard from his wife for days and he's starting to get worried, with his mother-in-law Karin they decide to leave it to look for her in Stettin, where they learn that Julia is investigating a private assignment.
Participants in an illegal car race are surprised by police and try to flee, during the escape a young man is run over and dies. Former prosecutor is driving with the son of a friend when, suddenly, a car comes directly in front of her.
A homeless is injured in a fire on a yacht docked, Julia discovers that earlier the ship was involved in an accident where a couple was murdered but their son survived, then she wonders if he's returned to the island to avenge his parents.