Overnight, nothing changes for Leonie and Tom Sauter: their four-year-old daughter Salomé has vanished without a trace. When a ransom demand arrives, the extortionist turns out to be an opportunist who has nothing to do with the kidnapping – but the man is fatally hit by a train during the money exchange. Tom, now suspected of murder, decides to flee. Together with private investigator Lüthi and journalist Ulla Merz, the Sauters try to find Salomé.