Normally, the Valais cantonal police are concerned with minor details: runaway sheep and a presence at the village festival. Until the day when an inconceivable murder attempt awakens the criminalistic energy of policemen Bax and Pirmin. In the process, the duo not only uncovers local networks, but also tangles with dark forces.
Aurélie, an inspector who clumsily let a young man suspected of being involved in the disappearance of his girlfriend go, learns that he was arrested on a Swiss merchant navy cargo ship for the murder of a sailor. Sent to South Africa to repatriate him, she discovers that the missing girl was a passenger on this cargo ship a few weeks earlier. She continues her investigation alone, facing resistance from the crew.
Excelsior, a ski-resort without snow. A missing bride-to-be, a course for men in search of meaning, a couple in crisis, a Carnival monster, marmot hunters and a glacier in peril: the uncertain future of an Alpine community hinges on its ability to face up to its contradictions when everything collapses.