Shia LaBeouf returns as Sam Witwicky in Transformers: Dark of the Moon. When a mysterious event from Earth's past erupts into the present day it threatens to bring a war to Earth so big that the Transformers alone will not be able to save us.

On the planet Cybertron, a war was waged between the Autobots and the Decepticons for control of the Allspark, a mystical talisman that would grant unlimited power to whoever possessed it. The Allspark is smuggled off the planet, but Megatron goes in search of it. He tracks it to Earth and his desire for power sends him into the Arctic Ocean. The sheer cold forces him into a paralyzed state. His body is later recovered, and before going into a comatose...