Aozora Tani (Misako Tanaka) lives with her mother, Aiko (Yumi Shirakawa), and half-sister, Miyuki (Anju Suzuki). Her mother, Aiko, became a celebrity after writing a book and is now active as a critic, while her younger sister, Miyuki, who is in her second year of high school, is a modern child who stays out overnight without hesitation. \One day, Aozora is having a secret meeting with her boss, with whom she is having an affair, when a phone call from his wife breaks the mood and she leaves the room, but she meets Arashi Awano (Masanori Hamada), who is also having a secret meeting and is in trouble when her husband returns home.