After ten years, the missing girl Fiona Althoff suddenly appears as a young woman (Gro Swantje Kohlhof) in front of her family. She says she was kidnapped and abused. The family is happy to be able to hug their daughter and sister again, but Bremen detectives Inga Lürsen (Sabine Postel) and Stedefreund (Oliver Mommsen) are skeptical. At that time they had not found the girl and suspected the father as a murderer, after which he took his own life. His wife Silke Althoff (Gabriela Maria Schmeide), Fiona's mother, still raises serious allegations against Inga Lürsen. Did the commissioners fail back then? Inga Lürsen and Stedefreund take up the investigation again and increasingly come across unanswered questions.