Shin-ae, the director of an orphanage, leads a double life, transforming into a high-class call girl named So-hee on Saturdays and Sundays. One day, a young man named Han Baek-min is hired as an agricultural teacher at the orphanage. Baek-min falls in love with Shin-ae at first sight, but she doesn't accept him. However, as the orphanage faces financial difficulties, Shin-ae begins to waver in the face of Baek-min's love. But Soon-nyeo, who had always suspected Shin-ae's life, exposes her double life. Baek-min realizes that Shin-ae's actions were for the sake of the children and tries to understand her, but Shin-ae doesn't accept Baek-min's heart.