Target investigator Nora Weiss has a godchild named Daina. Diana disappears on a ferry from Riga to Lübeck. Nora's new job with the Schleswig-Holstein Police allows her to take the case of her missing godchild from her predecessor, Jan Geissler, into her own hands because Weiss is working on the Mattner case. Ultimately, both cases come together when the child who is said to have killed Mattner has allegedly abducted as Daina.