The most impressive military landing recorded in history: 160 thousand soldiers, 11 thousand planes and almost 7 thousand boats of all types. It's D-Day, the longest day. Thousands of young American, English and Canadian soldiers wrote one of the most important pages of the Second World War. While the pale light of dawn spread over the Channel, the largest amphibious invasion force ever assembled up to that moment lands on the coasts of Normandy: it is June 6, 1944. Alberto Angela, from the places of the landing on the coasts of Normandy, will reconstruct the moments crucial through exclusive testimonies of the last survivors. Ulisse reached these ex-boyfriends in their homes: in France, in England, in the United States but also in Germany, where Alberto Angela met, among others, the young German sentry who on the night of the operation, on the famous Pegasus Bridge, spotted the first allied soldiers and fired the first flare into the air.