Go Eon-seok, who got lost as a child, coincidentally meets So So-man in the forest. So So-man promises to show Eon-seok the way home if he agrees to marry her falsely to fulfill the dying wish of her mother. Eventually, the two hold a wedding ceremony and part ways. Time passes, and So So-man, now an adult, takes a job as a maid in the prestigious Go family, renowned jewelers, to earn money for her disabled brother's medical treatment. There, she encounters the eldest son of the family, Go Eon-seok...