Optimus Prime and the Autobots must prevent the evil Decepticons from unleashing a powerful weapon that will be used to terraform the Earth.Optimus Prime and the Autobots must prevent the evil Decepticons from unleashing a powerful weapon that will be used to terraform the Earth.Optimus Prime and the Autobots must prevent the evil Decepticons from unleashing a powerful weapon that will be used to terraform the Earth.