Rie, a woman who has lost all her memories and wakes up in a hospital, begins living with Hiroki, a man who takes care of her and claims to be her fiancé. However, she begins to have flashbacks of a woman in black underwear...

Momoko, who attends the prestigious private school, is a married couple with a school nurse, Ryunosuke. Only Momoko's uncle, the principal, Abe, knew the secret. One day before graduation, a new vice-principal, Hisae, will be transferred. Momoko's best friend, Airi, is a fan of Ryunosuke, and for some reason she appears in the health room and provokes. Ryunosuke is unaffected by the temptation. Momoko, who came to pick up Airi, felt a mysterious mood and was angry inside. While leaving school, when she sees Momoko in a bad mood, Airi stabs her nails as if she is aiming for Ryunosuke. To Momoko who denies it, Airi gets excited with the bottom story, saying, "You're the prince of your fingers." Taiki, the most talented person in the school, looks at these two people from behind. Ryunosuke steals his letter and tries to help him with his feelings, but when he finds out that he is giving it to Momoko, the romance confiscates the letter and the law until the exam is over.

Momoko is nervous but enthusiastic about joining the movie company she has longed for. However, she was late from the first day and was struck by Reiko, a female employee who is famous for her talent. On the other hand, the president liked Momoko and took care of it. But it was an adult filmmaking company! Although she was worried about the gap with the company she had envisioned, she was excited to have her seniors teach her work, and she was further exposed to the passion of the people involved and grew up every day.