Sam leaves the Autobots to lead a normal life. However, the Decepticons target him and drag him back into the Transformers' war.

Sam Witwicky and the Autobots must unravel the secrets of a Cybertronian spacecraft hidden on the Moon before the Decepticons can use it for their own evil schemes.

The Autobots, a faction of robots from the planet Cybertron, are hunted down by an elite CIA black ops unit and a ruthless bounty hunter. They turn to a struggling inventor and his daughter for help.