Presenter Giles Milton walks the Normandy coastline, from Omaha Beach to Pegasus Bridge, tracing June 6, 1944 through the accounts of the people who lived it: Allied and German soldiers, French civilians, spies, and radio operators. Part one covers the buildup, including a visit to Morfa Bychan in West Wales, where Allied forces built replica beach defenses to rehearse the landings. Part two follows the invasion itself, from glider troops dropped silently behind enemy lines to paratroopers who ambushed German commanders to the infantry crossing open beaches under machine gun and mortar fire. Local historians provide context, and 100 year old veteran Trooper William Gladden, who took part in the airborne assault on the vital Normandy bridges, gives a firsthand account of the night. Filmed on location at the actual invasion sites, the two-part film sticks close to individual testimony rather than a broad strategic overview, favoring the ground-level experience of fear and confusion over any tidy version of the day.