Crystal is invited to spend a weekend at her employee's manor. As soon as she arrives, it feels unlivable- there are cobwebs in every corner, skulls, and clippings of old newspapers. After staying for a while, she is met with shrill screams from outside. Rushing out, she soon finds that there are children kept in the shed beside the manor.
A fight breaks off, and her employee reveals a strange power. In the midst of all of this, Leon, a magical boy, appears and tries to rescue the child. Crystal and Leon befriend one another, and he gives her a locket that has the power to transform her into a magical girl. Not just any magical girl, but the Blossoming Savior.