Because Dragonwatch, an ancient group of wizards, enchantresses, and dragon slayers, is crumbling, an uprising of dragons threatens to destroy the magical preserves as well as overrun the nonmagical world.

Seth and Kendra, newly appointed caretakers of Wyrmroost, soon find themselves in a fight for their lives when the dragons, led by Celebrant, rebel.

As the war with the dragons intensifies, all eyes are turning to Titan Valley for help. A dragon sanctuary unlike any of the others, this one is home to enslaved dragons ruled by the powerful Giant Queen, one of the five monarchs of the magical world. In addition, it houses the arena for the Titan Games, a series of gladiator-style battles presided over by none other than Humbuggle, the demon who stole Seth's memories! Seth wants to regain his memories....

"The magical world teeters on the brink of collapse. The Dragon King, Celebrant, has united the dragons into a vengeful army, and only a final artifact stands in the way of them unleashing their fury against humankind. With established allegiances shifting under the strain, Seth and Kendra find themselves in desperate need of new allies. Seth must face his most dangerous quest-the fulfillment of his pledge to the Singing Sisters. With only Calvin...