Shota uses his mother's position as editor-in-chief of a gravure magazine to sneak into a studio photoshoot. There, he meets young gravure idol Monami Takarada, who has a 100cm bust. He peeks at her changing, gropes her breasts under the pretext of giving a massage, and finally works up the courage to have sex with her while wearing a costume, repeating various lewd acts throughout the studio.