When the bicycle of 13-year-old Sinikka is discovered in the exact same wheat field where a heinous rape/murder took place 23 years prior, retired police detective Krischan (Burghart Klaußner) senses that the two crimes are connected, and vows to bring the killer to justice. The fact that Krischan was unable to catch the killer two decades prior still haunts him to this very day, but perhaps with the help of ambitious young officer David, this time he will find a way to bring closure to the case. Later, as the investigation begins and a sweltering summer heat wave washes over the town, the young victim's parents begin to experience an overwhelming sense of dread concerning a clean-cut husband and father who had recently visited their home before the crime.