With Mahrah on Earth and Rahaim dead, there are no more threats to Earth. Or are there? When Nadia and the Watchers travel to Peru to find a sacred site, they uncover the secrets of an ancient civilization. Aidan and Kelly will stop at nothing for those secrets, including kidnapping Nadia.

Mahrah, Nadia, and the Watchers must get the final object, which will grant the bearer the ability to hold all of the dragons' powers, before Aidan and Kelly can claim it and wreck their own havoc on the world.