In the land of Pleniris, Kerstas, the crowned prince of Requilit, is soon to be crowned king. But when the day finally comes, and Kerstas can fulfill a promise that he made when he was a boy, an evil plot and an ancient prophecy come into play and takes that away from him. Inerium, princess of Requilit and sister to Kerstas, sets out on a journey to save her brother. In a long and dangerous journey, she encounters old magic, strange creatures, and a friend who she never thought she would make. Kerstas will stop at nothing to fulfill his promise to himself and reclaim his kingdom, and Inerium will stop at nothing to get her brother back.