Marie, in her forties, lives in the Hautes-Alpes, cut off from her relatives. She only has her lover, Alex, a border policeman. Thanks to him, she smuggles cigarettes between Italy and France for her ' get out. On her way to France, she bumps into Mouneer, a 20-year-old Sudanese migrant, determined to join his little sister. He guesses her trafficking and persuades her to bring migrants across the border.

Quadragénaire, Marie vit avec sa fille dans un mobil-home au coeur des Alpes. Confrontée à des soucis financiers, elle se livre à un trafic de cigarettes entre la France et l'Italie. Une nuit, Marie croise un jeune migrant qui la convainc de prendre part à une activité beaucoup plus rentable...