Heir of an old famous family of Exorcist, You Keika is stricken by poverty after losing his parents and he had to struggle as a street fortune teller and as a computer recovery part timer to earn money. One night in a junkyard, he met the mysterious yet charismatic Exorcist, Tanmoku Ki who was fighting an evil spirit. This encounter was the beginning of a fated story for You Keika. Unfortunately for him, he was hit by a car and became a ghost. That's where, the handsome exorcist Tanmoku Ki appeared and asked You Keika to make “a pact” with him to fight Evil Spirits together. Here starts the friendship of our heroes!