Bumblebee and Ironhide are tasked by Optimus Prime to guard NEST Command.
Two Decepticons set a building on fire and Ratchet and Bumblebee go to fight them.
Sideswipe and Ratchet are transporting some energon when, Starscream and Mindwipe come to steal it.
Optimus fights Megatron with Bumblebee, Ironhide and Ratchet fighting Starscream.
The final fight with all the Decepticons and Autobots.