An original Transformers novel series! In the Nevada desert a 12-year-old boy gets swept up in a thrilling adventure when he stumbles across two giant robots battling in the dust. The boy and a new Autobot friend set off to secure a secret bunker before the Decepticons can find it. But the robot they left behind is a Decepticon in disguise, and he tells Bumblebee and the other Autobots that the boy and his friend are up to no good. Will the truth be revealed in time?

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?