Gwendolyn wakes up in the past after suffering a fatal betrayal orchestrated by her envious sister Adela. Vowing never to repeat her previous mistakes, she volunteers to take her sister's place as bride to the dreaded Wolf King, whom the royal capital fears as a feral man-eating brute.
Inside his isolated fortress, Gwendolyn uncovers a royal prince trapped under a demonic transformation curse rather than a vicious monster. When Adela and the corrupt Queen Mother plot to execute the beast ruler at an imperial celebration, Gwendolyn risks her life to stand beside him and break the sovereign spell.
