Keika You, the heir to an old famous family of exorcists, is impoverished after the death of his parents. To make ends meet, he works as a street fortune teller and part-time computer recovery technician. One night in a junkyard, he meets Ki Tanmoku, a mysterious yet charming exorcist fighting an evil ghost. This incident marks the beginning of Keika You's fated story. Unfortunately for him, he was hit by a car and turned into a ghost. The attractive exorcist Ki then arrived and invited Keika to establish a "pact" with him to combat evil spirits together. Our heroes' friendship begins here!