Thousands of years ago, the planet Cybertron was consumed by a civil war between the two Transformer factions, the Autobots led by Optimus Prime and the Decepticons led by Megatron. The Autobots want to find the All Spark, the source of all Cybertronian life, so they can use it to rebuild Cybertron and end the war, while the Decepticons want to use it to defeat the Autobots and conquer the universe.
