In this follow-up novel to Switching Gears, 12-year-old Kevin Bowman is now working with the Autobots to fight the evil Decepticons and search for his missing brother. Kevin is starting to lose hope until he gets help from the most unexpected person-his nemesis, Douglas. Douglas informs the team of a secret cave of ancient Cybertronian weapons located at Battle Mountain, Nevada. Kevin and Gears believe the cave might have clues to the disappearance of Kevin's brother and other missing soldiers. Will the team find what they are looking for or has Douglas set a trap for them at Battle Mountain?

Three kids discover that alien robots, called Autobots, are living here on Earth! Led by their leader, Optimus Prime, the Autobots are on a mission to fight the evil Decepticons. Can the trio keep such a big secret?

When a secret organization named MECH attempts to steal top-secret government technology, Optimus Prime is asked to transport it safely. The Decepticons learn about the technology and derail a train to distract the Autobots leader. Optimus' secret mission turns into a high-speed chase through the mountains. Can Optimus save the train and keep the secret safe?

Background information to the events and characters of the Transformers Prime television cartoon program.

OPTIMUS PRIME and his team of AUTOBOTS find themselves facing a new mission on Earth: BEAST HUNTERS! In this exciting battle, the AUTOBOTS must fight the fierce dragon mode of PREDAKING! Who will win? Find out in this action-packed storybook based on the hit TV show!

Megatron discovers further powers of Dark Energon and raises an army of undead robots! It's night of the living Terrorcons as Optimus Prime and the Autobots fend off these zombie Transformers.