Young Lady and Gentleman

Dan-dan (Lee Se-hee) lives with her father, her stepmom and her stepbrother, Dae-beom, the ever-failing businessman, who has lost their home and all their money in a scam. Tired of putting up with them, she leaves home. Feeling down on her luck, she climbs up a mountain as a temporary relief from life's pressures. There, Dan-dan runs into and is startled by Young-guk (Ji Hyun-woo), who is hiking while dressed in a suit. Young-guk is the capable chairman of a corporation, as well as a widower with three kids. Dan-dan becomes their live-in tutor and, by chance, other members of her family also end up living at Young-guk's house. As she and Young Guk start to live together and look after Young-guk's kids, they find themselves in situations of conflict, both small and large. Despite their 14-year age difference, they start to grow fond of one another. With the help of Dan-dan, will Young-guk be able to overcome his grief and grow closer to his kids? The plot shares many significant story elements of The Sound of Music, Parasite, and The Nanny.