The missing person case of a young woman leads Seeler to a Croatian island to a mysterious connection that uses hypnosis to treat people with mental trauma. The investigator experiences for himself how dangerous "false" memories that feel "real" can be when he dives into his subconscious.

SOKO 5113 is a long-running German police procedural television series. It was first aired in 1978 on 2 January. SOKO is an abbreviation of the term "Sonderkommission" in German.