While on a business trip in Japan, Jae-kyung discovers a boarding house advertised by a real estate agent. Despite the house's age, she's drawn to Yuya, the boarder's housekeeper, and convinces her to let her stay by helping with chores to win her affection. Eventually, Yuya reciprocates Jae-kyung’s feelings, and Ken, who believes he has achieved his goal, appears. Jae-kyung is bewildered by his presence assisting with household tasks, and now finds herself in another boarding house, this time pursued virtually by a stalker.