The film adaptation is set in a mystical fantasy world where humans and supernatural beings co-exist together. It tells the story of how cosmologist Qing Ming and his friend Bo Ya, who he met whilst taking part in celestial rituals up in heaven, crack baffling and weird cases together. In their many adventures, the pair uncover a century-old secret and ends up saving humanity. ~~ Adapted from the novel series "Onmyouji" (陰陽師) by Yumemakura Baku (夢枕獏).