War action drama based on real events in the Second World War. The film tells the story of the Pathfinders, a volunteer unit of American paratroopers who are given the deadly mission to parachute into Nazi-held territory 30 minutes before the Normandy invasion. The soldiers must then locate and mark strategic 'drop zones' and set up the top-secret navigation equipment needed to guide the primary airborne assault on D-Day, while concealing themselves from the enemy until the invasion gets underway.