After returning from a police mission in Afghanistan, Chief Inspector Harder is set to investigate a bog body found in a village called Friedland. The confrontation with Friedland's brutal history brings a grave guilt from Harder's own past to the surface and forces her to face the echo.
Melanie is a new pupil at the Otto Leonhard High School, and Felix takes a real shine to this newbie, much to the annoyance of Ella and Felix’s gang. They believe that Melanie is responsible for a number of small thefts that have been happening at the school since she arrived. Events take a drastic turn when the class goes on a school trip...