Enter thirteen-year-old orphan Marona who lives alone on Phantom Isle Island. Marona isn’t your average child, as she has the uncanny ability to see and manipulate spirits, one of whom happens to be Ash, a swordsman who died alongside Marona’s mother and father. Ash serves as a companion and guardian to Marona, counseling her as she works to help people in the surrounding islands who rely on her abilities.