Trevisan's last case brought him to the brink of a breakdown. He is assigned to the State Criminal Police Office in Hanover, where he is supposed to slowly reintegrate into the department for missing persons and unresolved cases, but his first case is anything but a calm start. Three years ago, two female cyclists disappeared without a trace during a cycling tour at Steinhuder Meer. The investigations went nowhere, and the main suspect, the mentally disabled son of a pharmacist, had to be released due to lack of evidence. Three years later, the case lands on Trevisan's desk, as a young woman was found severely injured near Flensburg, apparently thrown from a moving car at high speed. The DNA test is conclusive: the woman from the roadside is one of the missing cyclists. Is the second victim from Steinhude as well?.