The Saintess, Adelaide, and the former King's Trusted Knight, Claude, had a daughter named Artemisia. Following Artemisia's birth, Adelaide received a prophecy from the Goddess through a Prophet, predicting that their child would bring about the downfall of the Kingdom, sparking a conflict between the Temple and the Imperial Family. Sera, Adelaide's apprentice, was given the final task of escaping with their daughter. After hiding for 17 years, Sia, as she is now known, is drawn to the capital and enrolls in Tethoris Academy. What fate awaits Sia as she embarks on her journey to rediscover her origins, and could she be the catalyst for the Kingdom of Tethoria's downfall?