Commoner Elena makes a pact with the Abyss demon Damon so her officer boyfriend Arthur can rise through the ranks, paying the price with a 200-pound weight gain. Arthur heartlessly abandons her for the noblewoman Victoria, who pushes Elena from a raised platform. Near death, Damon saves her and gives her a key to the endless Abyss Vault—spending gold lifts her curse. Elena transforms into a breathtaking beauty and returns as the capital's richest woman, crushing her ex, her rivals, and arrogant nobles with ruthless precision.