Will believes his wife Rosalind is innocent of their son’s suspected murder, only to discover the devastating truth behind her past links her to another unsolved crime.

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.

Sam, a freelance journalist, decides to investigate the growing phenomenon of disaffected youth joining extremist groups. He infiltrates a group of four young people who have been tasked with the creation of a jihadist cell and whose mission is to destabilise the city centre of Paris.

During WWII, four North African men enlist in the French army to liberate that country from Nazi oppression, and to fight French discrimination.