Kon, an onmyouji from Kyoto, is drawn to a perplexing vessel connected to the demon world. He is requested to repair the protective barrier of the vessel, but he encounters Ibaraki, an alluring demon with four horns and a history as a male prostitute. Surprisingly, it transpires that the vessel is a location of corrupt activities. Kon and Ibaraki team up on an extraordinary journey of fantasy, relating the tale of an onmyouji fascinated by demons as well as his association with a former sex worker.