Set in a medieval age, a forbidden love between ancient immortals sets in motion the life of one of the most powerful female warriors ever seen. Raised by a peasant woman, Mischa experiences hardships before joining the Sisterhood of Seren; an entity that teaches weaponry and battle skills to women of all ages. Advancing quickly in her training, Mischa becomes a captain in the King's army. Battles between kingdoms, love, betrayal, and struggles with being different all lead Mischa to uncovering the truth about her past and a terrible secret that could destroy the sisterhood itself.