A prologue to fantasy, a story for adults. Hairdresser Eri (Yoshida Yo) and tax accountant Hiroyuki (Hirahara Tetsu) are remarried. The couple has no children and enjoys an elegant life. In an interview with the film director (Goro Inagaki), the two said, "I'm not dissatisfied with my married life." However, Eri had a secret that she could not tell her husband. One day, a mysterious woman (Misako Renbutsu) comes to Hiroyuki's office. The two of them quickly close the distance... And Hiroyuki has an amazing experience. What he saw in his bedroom! ?

Suddenly, his wife Eri (Yoshida Yo) has rejuvenated to the appearance of Eri (Renbutsu Misako) ten years ago! Her husband Hiroyuki (Hirahara Tetsu) is puzzled, but she is completely unaware of the fact that Eri and her surroundings have rejuvenated. On the other hand, Eri, who has gained her youth, is favored by Hiroyuki's subordinate Negi (Kimura Tatsumi). In her twenties, Eri (Karin Ono), a fledgling beautician, was dating photographer Kenji (Kenta Suga), but...

His wife, Eri (Ono Karin), has been rejuvenated to look like she was in her 20s. To her husband Hiroyuki (Hirahara Tetsu), she was a strange woman before she met him...! And the story goes to the main chapter - a world where most adults other than young people have the same face of a man (Goro Inagaki) and a woman (Rosa Kato). Seiya (Yuzu Aoki) and Rin (Ai Mikami), who live next door to each other, are in love with each other, but have a complex and are unable to express their feelings. One day, Rin meets a woman named Onoda (Yoshida Yo) at a movie theater.

Seiya (Aoki Yuzu) takes the plunge and asks Rin (Ai Mikami) out on a date and makes a promise. On the other hand, Nakayama (Ryutaro Akimoto) is worried about being avoided by Reira (Natsumi Okamoto). When Reira sees Nakayama's face, she remembers that she was attacked by a customer (Goro Inagaki) who was a papa-katsu. Meanwhile, Seiya is worried about Reira, who is hurt physically and mentally, so he refuses to go on a date with Rin and spends the day with her. However, Rin notices Seiya's lies...

Rin (Ai Mikami) was hurt when she witnessed Seiya (Yuzu Aoki) and Reira (Natsumi Okamoto) meeting together. She is further troubled by her facial complex, and her interest in cosmetic surgery, which is prohibited by law, is growing. And she started "papa katsu"... At that time, a movie director (Goro Inagaki) visits the high school to shoot a new movie. When Rin meets actress Ando (Ono Karin) and papa-katsu customer Chiba (Yamanaka Takashi), she will step into the forbidden dark world...? !

Kirei no Kuni is a secret gathering place for people who have not undergone cosmetic surgery. Rin (Ai Mikami) finds out about her illegal surgery there and is swayed by her temptation. Then she meets actress Onoda (Yoshida Yo). On the other hand, Seiya (Aoki Yuzu) finds out that Rin is working as a daddy and is very upset. Takashi (Tatsuya Yamawaki) has a crush on Reira (Natsumi Okamoto), and Reira confesses to Nakayama (Ryutaro Akimoto) that she is suffering from the appearance of a customer (Goro Inagaki) who works as a dad. Finally, the young people's feelings overflowed!

Seiya (Yuzu Aoki) learns that Takashi (Tatsuya Yamawaki) confessed to Reira (Natsumi Okamoto). He decides to tell Rin (Ai Mikami) about her feelings so that he can push his back. On the other hand, Reira proposes that she want to spend time with Nakayama (Ryutaro Akimoto) in order to overcome the trauma of being attacked by a visitor (Goro Inagaki). At the karaoke bar where the incident happened, the two... And then Rin finds out about Seiya's feelings. She tells him that she wants to have her cosmetic surgery to change her face. At that time, Seiya-!