S1, E1: A civil war rages on the planet Cybertron between the heroic Autobots and the evil Decepticons. With the planet's resources depleted, the Autobots—led by their leader, Optimus Prime—set out on a mission to scout for new energy sources. But a surprise attack from Megatron and the Decepticons will leave both sides marooned and deactivated on the distant planet Earth for 4 million years! When they finally reawaken, the battle between good and evil continues on present-day Earth.