James Holland and Mike Simpson examine the preparations for the invasion across southern England. Then, they cross the Channel to Normandy to challenge many D-day myths.

The real fighting begins as James and Mike travel inland, analysing the Canadians' first encounters with the Waffen SS in a forgotten but vital battle.

James and Mike turn their attention to Operation COBRA. They range deep into Normandy, where key later engagements took place, visit neglected battlegrounds and absorb the immense scale of the campaign.