1943. The British POWs are commanded to build one link in the infamous Bangkok-Rargoon railway. Colonel Nicholson, a man prepared to sacrifice his life but not his dignity; Major Warden, a modest hero, saboteur and deadly killer; Commander Shears, who escaped from hell but was ordered back. Ordered by the Japanese to build a bridge, the Colonel refuses, as it is against regulations for officers to work with other ranks. The Japanese give way but, to prove a point of British superiority, construction of the bridge goes ahead - at great cost to the men under Nicholson's command.