Boris Arnoux, international ski champion and darling of Les Clairies, returns to the village to spend the Christmas holidays after winning an international downhill race. Charlotte, his wife, organized a party at the Isba hotel to celebrate his victory. During the party, a caravan catches fire in a seasonal camp below the resort. In the rubble, we find a charred body as well as €150,000 in cash. Émilie Karras, a young gendarme from Lyon Research Service, is in charge of the investigation in collaboration with Major Servoz, gendarme from Les Clairies. Also from the village, she has no desire to drag on in this resort filled with bad memories for her.