Neige, a divorced mother of three children, regularly visits her Algerian grandfather Emir, who now lives in a retirement home. She adores and admires this pillar of the family, who raised her and above all protected her from the toxicity of her parents. The relationships between the many members of the family are complicated and there are many resentments... Fortunately Neige can count on the support and humour of François, her ex. The grandfather's death will trigger a family storm and a deep identity crisis for Neige. From then on, she will want to understand and know his DNA.