The beautiful illegitimate daughter of the Navitan Kingdom's royal family, Cecile Franvier, has been selected as the bride of the Arkia Empire's notorious Emperor Estian. He is a heartless despot who possesses inhuman strength, and all surrounding countries live in constant fear of his savage conquests. Everyone treats Cecile as if marrying Estian means she is certain to die soon—and she refuses to go down without a fight.

Cecile pretends to be a wretched woman who will never tremble before the tyrannical Estian. She demands that he carry her to the altar, and she is not sure which is more surprising—that the emperor complies or how handsome he is. As the new empress, Cecile becomes an immediate target of various assassins. However, Estian takes a liking to her, revealing one way she can survive: she must become a villainess infamous enough to outshine even him!