It is 1812, and England is at war with America. When 250 American prisoners of war arrive at Dartmoor prison, it¹s already overcrowded with French inmates. Among the newcomers is Lieutenant
Pilgrim Penn, an American merchant seaman, who soon falls in love with a local girl at a market held inside the prison walls. Despite their common enemy, the inmates fight amongst themselves,
and the Americans are a particularly troublesome group. When the governor's daughter becomes romantically involved with one of them, he orders his soldiers to open fire during a minor
disturbance—even though the war has ended and personal revenge is suspected as his true motivation.