Sanada, an office worker, has just moved into an old apartment. His room is still a mess, but he goes to greet his neighbors. There, he witnesses his neighbor, Yuri, writhing around in a lewd outfit with another man, and he can't help but take a secret photo of her with his hobby camera. That night, when he goes back to greet her, Yuri introduces a different man as her husband than the one he saw during the day. Sanada can't hide his shock, but he becomes obsessed with Yuri, who looks pure but is actually lewd, and he begins to want to not only take secret photos of her but actually touch her...