Riot, a 62-year-old war hero and master magical craftsman, lives peacefully with his grandchild after retirement. Their lives are shattered when people seeking his forbidden Mythic Items murder them both. With his last strength, Riot transfers his soul into the powerful magical doll Rei and returns in a youthful body. Determined to avenge his grandchild, he hunts down those responsible and makes them face the consequences of their actions.