After acquiring mysterious tablets that grant temporary invisibility, a man embarks on a spree of voyeurism and harassment, targeting women at a public bathhouse and an all-girls academy. He eventually turns his attention to his coworker Mie, manipulating her grief over her deceased pet to engage in sexual acts, only to discover that his invisibility may not be as absolute as he believed.
After using his invisibility for perverted pranks at an all-girls academy, Mie Naito saves his coworker Otonashi from a group of harassers. Though Otonashi initially forgives him and the two share an intimate encounter, Mie's confession about his past exploits leads her to organize a vengeful ambush with all the women he has targeted.