Not everything has been told about World War One. This documentary tries to explain the inexplicable: how tens of millions of men could have suffered the unbelievable toughness of life in trenches during 4 years, season after season, day after day, night after night? How could they have accepted the idea of a sure death or injury while they could not even tell the exact reason why they were fighting? What you are about to see can seem crazy: WW1 was maintained by a general consent.