ife. That is, until he accidentally stumbles into a hidden spirit temple and is challenged to a duel of honor by the Guardian of the temple, only to later discover a whole hidden world behind the city he grew up in that is apparently infested by spirits, non-mortal creatures and different groups known as "Exorcists", who do their best to keep the magical side of the world hidden from mundane life of mere civillians, like the one Riot was before.