The retelling of June 6, 1944, from the perspectives of the Germans, US, British, Canadians, and the Free French. Marshall Erwin Rommel, touring the defenses being established as part of the Reich's Atlantic Wall, notes to his officers that when the Allied invasion comes they must be stopped on the beach. "For the Allies as well as the Germans, it will be the longest day"

A fur-trapper battles the elements and robbers when a gold shipment is ambushed - leaving a boy in urgent need of medical attention.

15岁的英俊少年海因切（Heintje Simons）与妈妈（Gudrun Thielemann）在德国中部一座城市靠一家花店生活，尽管平日省吃俭用，因为生意不景气，两人仍渐渐入不敷出，花店也因交不起房租面临被关门的危险。
海因切无意间看到现在汉堡的赛车手父亲（Heinz Reincke）当年驰骋赛场的照片后，决定到汉堡找寻这位早已不识自己模样的父亲，希望他能与母亲复合，为此，他利用夏令营的机会瞒着母亲来到汉堡，不想当年的英雄父亲正处于事业的低谷，为让父亲恢复昔日风采，他隐瞒自己的身份开始帮助父亲。