A picturesque ski resort in Switzerland is preparing to close for the season. Tourists leisurely leave this wonderful corner, cafes and restaurants begin to close - the dead season is getting closer. It seems that nothing bad ever happens in these places, but that's only at first glance. In the mountains on the border with France, a serial killer is at large, leaving a dried edelweiss flower at the crime scenes. The case on the Swiss side is assigned to Captain Sterenn Peiri, who is also experiencing a personal tragedy. On the French side, Detective Buanni is assigned to the case. The police will have to work together to stop the chain of horrifying murders.