An erotic film about a remarried stepmother, her son, and her son’s friend.Geun-sik has a young and pretty stepmother, Yeon-hee. His father, who lives with his stepmother, goes on a long-term business trip. Gi-hoon, his best friend and close older brother, keeps looking for Geun-sik’s stepmother, so Geun-sik tries to protect her stepmother from Gi-hoon. Meanwhile, Ji-won, a teacher at a daycare center run by Yeon-hee, is attracted to the bad boy, Gi-hoon.