Legends whisper about the ancient Sanijyan, powerful three-eyed demons that possessed the secret of immortality. Yet their fascination with humanity led to their slaughter when one of their strongest leaders, Lord Kaiyanwan turned to evil. Pai is the last Sanjiyan or holy demon, the rest were exterminated 300 years ago. She's spent the last three centuries trying to become human. In Japan, Pai meets Yakumo Fujii, whose scientist father discovered that transforming a Sanjiyan into a human requires the 'Statue of Humanity'. The evil creatures who hope to resurrect Kaiyanwang also want the Statue. Pai and Yakumo challenge them in a series of bloody battles.