Humans have discovered the Transformers again after a year and a half of searching. Decepticons and Autobots are captured by a human organization and used as metallic puppets of war. Grimlock leads the Autobots and Decepticons in a slaughter of humans at an oil plant—and the slaughter is shown! The U.S. Government contacts the only person on record as ever having known about Transformers: Spike Witwicky, who currently is a working man taking care of his infant son, Daniel. However, the U.S. military reveals to Spike that it has found one of the surviving Transformer bodies...