Rosalie is a perfect and intelligent princess hailed as the reincarnation of a saintess. However, she harbors an incurable curse—an insatiable desire for men. One day, an encounter with her arch-nemesis, Crown Prince Lucius of the Empire, awakens her impulses, and she finally crosses the line... Losing her only reliable physician and despairing over the curse eroding her body, Rosalie resolves to defy this fate by any means necessary. As the princess struggles to break the curse and the ulterior motives of the men who bewitch her intertwine, the saintess becomes trapped in forbidden love.