Sister's Love: Yoon Sang comes to the villa to avoid his remarried father. However, the father arranges a vacation home for his son's preference as a villa and sends it down to take care of the guests to Mi-ran, his stepmother, who is uncomfortable with Yun Sang. Jane, the general manager, is recognized by the company for her excellent work skills. She is always harassed by Jane. She enjoys the secret life of two sisters as she spends the night with Jane due to a car breakdown on a business trip.