After losing their family home in Algeria in the 1920s, three brothers and their mother are scattered across the globe. Messaoud joins the French army fighting in Indochina; Abdelkader becomes a leader of the Algerian independence movement in France and Saïd moves to Paris to make his fortune in the shady clubs and boxing halls of Pigalle.

Elisabeth lives a quiet live in the Belgian countryside with her young adult daughter Elodie. After the divorce from her husband Elisabeth took care of her daughter on her own. When Elodie disappears over night and Elisabeth discovers that she travelled to Syria to join the Islamic State, she begins her journey to find her daughter.