Join Brianna the demigod daughter of Yum Kaax the Mayan god of hunters, the wild plants and animals and vegetation as she embarks on a quest to find the legendary heart of allegiance that has been taken by an evil god. with the help of Sevrrir they meet a forgotten god and journey to the underworld to find the heart so the other demigods can be accepted by the gods of her lands. At the same moment Hallthor finds himself in the strange lands of China joined by another hero from a foreign place as the two of them try to save the captured demigods of that land and avert the spread of evil!