After a donkey-kick to the head, Emilia Bennett awakens! She discovers she's living inside a novel, playing the role of a cannon-fodder character destined for a miserable end, serving only as a contrast to her cousin. To rewrite her fate, Emilia decides to marry the reclusive billionaire William Carter, rumored to be cold-blooded and twisted. She treats the role of a housewife as a high-stakes job, thus beginning their unconventional trial marriage.