On the eve of the landing of June 6, 1944, a French parachute battalion of the Special Air Service was dropped on Brittany to help the Resistance contain the enemy forces en route to Normandy. This film is in 2 periods: 1st period: They are not angels This part tells the chronicle of a training camp in England, a SAS parachute battalion of Free France during the Second World War. 2nd period: Terre de France. Once formed, the SAS parachute battalion parachuted into Brittany and sabotaged the German installations with the help of the Breton guerrillas. This is the fictionalized story of Colonel Pierre-Louis Bourgoin, Captain Pierre Marienne and the 2nd SAS Parachute Fighter Regiment.