Inside their base, Decepticon leader Megatron plots to intercept the Autobots, and leaves his lieutenant Shockwave in charge of Cybertron. The Autobots blast off aboard an Autobot spaceship, followed by the Decepticon cruiser. An asteroid collision forces them to use up most of their energy clearing a path through the resulting storm. The Decepticons take advantage of this vulnerability and attack. Both ships spin out of control, crashing on nearby Earth.