Leticia Orlesian, a duke's daughter dubbed la belle poupée, the beautiful doll, found a blissful mutual love with her betrothed, Prince Gilbert, and the two were quick to wed. Leticia, who can transform into a dashing and powerful male alter ego with the help of a ring passed down in her family, has vowed to always protect her prince and husband.

When the newlyweds attend a ball celebrating Gilbert's older brother—the crown prince, Cristophe—many in attendance suggest Leticia has doomed herself to a life of misery by marrying Gilbert, whose crimson eyes they take for the sign of a curse. It's up to Leticia to push back against common prejudice in a way only the belle poupée can!