Suddenly, Kai realizes that he is standing in front of someone's tombstone in the cemetery. He can't remember anything about how he got there, and just as he decides to leave, he sees a girl running through the cemetery, pursued by a ghost with a sword. Trying to help the girl, Kai takes refuge with her in a nearby church, but the ghost continues to pursue them. The fugitives have no choice but to descend into the church's ancient catacombs and hope that they can find another way out...