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.
The Thiel family has not heard from Julia. On leave from the police, she is now working privately as an investigator and has been gone for a week. She seems to have disappeared while following a lead at a brothel in Poland. Karin and Stefan work with police in both Germany and Poland to find her.