Our world's greatest hero becomes our fiercest enemy when Optimus Prime launches a mission to save Cybertron by destroying Earth. Now Bumblebee and Cade Yeager (Mark Wahlberg) must lead the Autobots in the ultimate battle to save mankind.

The Longest Day is a re creation of the D-Day invasion. Whenever possible, the original locations were utilized, and an all star international cast impersonates the people involved, from high ranking officials to ordinary GIs. Each actor speaks in his or her native language with subtitles translating for the benefit of the audience (alternate 'takes' were made of each scene with the foreign actors speaking English, but these were seen only during the first network telecast of the film in 1972). The stars are listed alphabetically, with the exception of John Wayne, who as Lt. Colonel Vandervoort gets separate billing. Others in the huge cast include Eddie Albert, Jean-Louis Barrault, Richard Burton, Red Buttons, Sean Connery, Henry Fonda, Gert Frobe, Curt Jurgens, Peter Lawford, Robert Mitchum, Kenneth More, Edmond O'Brien, Robert Ryan, Jean Servais, Rod Steiger and Robert Wagner. Paul Anka, who wrote the film's title song, shows up as an Army private. Scenes include the Allies parachuting into Ste. Mere Englise, where the paratroopers were mowed down by German bullets; a real life sequence wherein the German and Allied troops unwittingly march side by side in the dark of night; and a spectacular three minute overhead shot of the troops fighting and dying in the streets of Quistreham. The last major black and white road show attraction.