Two close friends and fellow cops, Tom and Lola, end up living and working together after Tom's marriage breaks down, blending crime procedural with feel-good family elements.

In the Alps, a caravan burns, enclosing a seasonal worker in its flames. Emilie Karras, a young gendarme from Lyon, originally from Les Clairies, leads the investigation, forced to collaborate with Major Servoz, a disillusioned local gendarme.