Elena enters a supernatural contract with the feared demon lord Damon, sacrificing her slender figure and bearing heavy pounds so her officer boyfriend can earn prestige. In return for her sacrifice, her ungrateful partner abandons her for a highborn noblewoman, tossing Elena off a temple balcony.
Rescued from death by the demon, Elena receives the golden key to an infinite abyssal treasury that sheds her curse with every fortune she spends. Reborn with dazzling beauty and boundless wealth, she returns to high society to bankrupt her former lover and crush his snobbish bride.
