Heir of an old famous family of exorcist, Keika You is stricken by poverty after losing his parents. He struggles as a street fortune teller and computer recovery part timer to earn money. One night in a junkyard, he meets the mysterious yet charismatic exorcist, Ki Tanmoku, fighting an evil spirit. This encounter is the beginning of a fated story for Keika You. Unfortunately for him, he was actually hit by a car and became a ghost. That was when the handsome exorcist Ki appeared and asked Keika to make a "pact" with him to fight evil spirits together. Here starts the friendship of our heroes!