SINGLE DISC VERSION. The battle for Earth continues in this action-packed blockbuster from director Michael Bay and executive producer Steven Spielberg. When college-bound Sam Witwicky (Shia LaBeouf) learns the truth about the ancient origins of the Transformers, he must accept his destiny and join Optimus Prime and Bumblebee in their epic battle against the Decepticons, who have returned stronger than ever with a plan to destroy our world.