Juliane Thomas is an ambitious but unemployed young writer. After breaking up with her lover she works at a dentist friend to make ends meet. One day she instantly falls in love with one of the patients (Jean Berner) and promptly writes a movie script about the encounter in which she projects her own fantasies about how things will turn out eventually. By coincidence this movie script is picked up by a film director who happens to be Berner's closest friend and from then on things become very complicated...

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"