A businessman wakes up in the morning next to his bed in a hotel room. He has no memory of the events of the previous night, and his colleague, with whom he sat in the hotel bar last night, has vanished without a trace. Meanwhile, former Munich detective and now private investigator Max Raintaler is called to a crime scene by the banks of the Isar River. In the heart of the city, north of the Museum Island, lie the bodies of two young Russian women. Is there a connection between the two events?.