June 1944. Europe is torn apart by war, and preparations are underway for the Normandy landings. Denis Porte continues his daily work with dedication at a British military base... which is fake. His mission: to move fake soldiers around every day and thus deceive the enemy. In the Porte family, there is a tendency for fathers and sons to die as heroes for France. So there is no question of Porte taking the slightest risk for his mother. Looking after a fake base is the most she will tolerate for her son. But after meeting Sami, an Algerian doctor who dreams of meeting De Gaulle, they decide during a drunken evening to take part. They set off bravely (and with quite a few drinks under their belts). Except that they don't have the right date or the right place. Add to that a hero who doesn't want to expose himself to danger. On D-Day, or almost...