As the Energon supply runs low on the planet Cybertron, the Autobots leave to find a new energy source. Their enemies, the Decepticons, follow. After a vicious battle in space, both of their ships crash land on Earth. The Decepticons try to gather every bit of energy that they can, from Earth, in order to get back to Cybertron. The Autobots, along with their new human allies, try to stop them. The Autobots make one last stand to stop the Decepticons from returning to Cybertron.