chunk: Several thousand years ago, the planet Cybertron was consumed by a civil war by the two Transformer factions, the Autobots led by Optimus Prime and the Decepticons led by Megatron. Optimus jettisoned the AllSpark, a mystical artifact that brings life to the planet, into space, but Megatron pursued it. Megatron crashed in the Arctic Circle and froze, and was discovered in 1895 by explorer Archibald Witwicky. Witwicky activated Megatron’s navigational system, which scanned the AllSpark’s coordinates into his glasses. The glasses end up in the possession of his great-great-grandson Sam Witwicky. In the present, Sam buys his first car, a rusting Chevrolet Camaro, but discovers it has a life of its own.