Chief Inspector Harry Stein (Till Demtrøder) is a police officer with heart and soul in the Baltic Sea town of Küstritz. His precinct receives unexpected support from his own family, as his daughter Hanna (Vanessa Eckart) returns to her old home from Rostock with her 15-year-old son Benni (Manuel Santos Gelke). Hanna is now an experienced inspector herself. But what Harry doesn't know is that his daughter had a good reason for leaving Rostock as quickly as possible. (Text: RD)