When a rescued POW returns home after eight years, a CIA agent begins to believe that the war hero may be a danger to America.

College-bound Sam Witwicky learns the truth about the ancient origins of the Transformers. He will have to accept his destiny and join Optimus Prime and Bumblebee in their epic battle against the Decepticons. The Decepticon forces, who have returned stronger than ever, have come to Earth on a mission to take Sam prisoner and destroy the world.