Sintai is fated to be rewarded with Nirvana upon dying in that lifetime if he killed the demon. Sintai is abetted—and then ultimately disheartened—by a female warrior named Pin Yu, who has captured his heart. Shortly after, Pin Yu unexpectedly finds her lost lover, Cho, who is Sintai's friend.
He then commits suicide to be reborn as Kai, who is being instructed by the now freed demon to build the Sampo, an item that will open the gates to hell. Kai's remembering and the sampo building are transposed to each other. Finally, Kai realizes what he has done and knows his complete past life and, with Pin Yu now reincarnated as Ronja and potentially returned to his side, he decides to fulfill his original quest and kill the demon.