The fate of the world hinges on two cursed swords. One feeds off of the blood of men, the other, the blood of demons. Together they have the power to unleash an evil unlike any the world has ever seen. Rey Yan knows little about the cursed blade he carries, but it's been landing him in a heap of trouble of late. First the sword turned on Rey, almost destroying him. Now a powerful sorceress who wants the sword for her own ends has kidnapped Rey's sister Shyao as bait. Together with his reluctant allies, Rey must travel to the heart of the Underworld to rescue his sister and discover his destiny.