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... 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.