Gratia, a girl considered useless and despised by her family, has a revealing dream where a mysterious man predicts a great future for her. She soon discovers that she is the lost daughter of the influential Luciffero family. In a surprising event, after being attacked, a golden light erupts from Gratia, forcing everyone around her to close their eyes. When the light dissipates, young Gratia disappears and in her place an adult version of herself appears, with distinct features of Luciffero. With an imposing stature and undeniable beauty, she comes across Nea, her mother, and realizes that the transformation expected for the future happened that day. This was the moment when ten-year-old Gratia and twenty-year-old Gratia switched bodies for the first time.