Brest, 1950. The war ended five years ago and nothing remains of the city. Massive bombings and intense fighting lasting more than a month turned the city, its docks, its arsenal, into ashes. Thousands of workers will build it up again, brick by brick. But with awful work conditions protests quickly arise and a strike begins. Violent confrontations happen during manifestations. Until one man falls. The next day René Vautier lands at Brest clandestinely to make a movie about the movement.