Transformers: Revenge of the Fallen: The Junior Novel — Dan Jolley

Sam and the Autobots thought they had stopped the Decepticon army for good. But as Optimus Prime and his crew search for any remains of a threat, they can't believe what they discover: an even stronger, more fearsome robot that seems unstoppable. The fight to keep the Earth safe has never been more dangerous. Join Sam as he and Optimus Prime gear up to take down the treacherous Decepticons, once and for all!