In January 2015, three days of violence gripped Paris, beginning with the assault on the offices of satirical magazine Charlie Hebdo and ending with a hostage siege at a kosher supermarket. Sky News reconstructs the sequence through news footage, eyewitness accounts, and police radio traffic, tracking the Kouachi brothers from the Charlie Hebdo shooting through the manhunt that followed, and Amedy Coulibaly's killing of a policewoman before he took hostages at the Hyper Cacher store at Porte de Vincennes. The film lays out how French special forces ended both sieges within minutes of each other, and counts the toll: seventeen people dead across the three days, including police officers, cartoonists, and shoppers caught in the supermarket. Interviews with survivors and officials fill in the gaps between the headlines, giving a straightforward chronological account of how a single week turned into one of the defining terrorist attacks in modern French history.