Quick recap
The Decepticons destroy the Autobot base, the team scatters and Optimus is badly hurt. Ultra Magnus arrives on Earth to help. Shockwave creates the Predacons, dragon-like beast robots, starting with Predaking. The Autobots regroup, destroy the Darkmount fortress and then storm the Nemesis to reach the Omega Lock before the Decepticons can transform Earth. In the final battle, Megatron shoots and kills Bumblebee, but the Omega Lock's Cyber Matter revives him and restores his voice. Bumblebee kills Megatron with the Star Saber. The Autobots use the Omega Lock to restore Cybertron and leave Earth. Ratchet chooses to stay behind.

