Four million years ago, the "Arc" and Nemesis crash-land on Earth, and the Autobots and Decepticons go into stasis.
In the present day, Bumblebee awakens on Earth. He is briefly instructed by Ratchet about what has happened so far. A volcanic eruption awoke the Decepticons, who escaped. However, aside from the two of them, the Autobots are still in stasis, and need energon to be powered up. Bumblebee then encounters Frenzy. After dispatching the Decepticon, he meets up with Ratchet, who further explains what has transpired. They then encounter Soundwave, who is in the process of harnessing a human power plant to produce energon, and defeat him.
With the energon they've harvested from the power plant, the pair reactivates Metroplex and Optimus Prime before moving out to locate more power plants in their quest for energon to help energize their comrades. They eventually encounter the Seekers and Jetfire, whom they promptly defeat. Immediately afterwards, Prime c...
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