Salaryman Sanada moves into an old apartment alone. Her room is still untidy, but she goes to say hello to the neighbor's house. There, she witnesses her neighbor's woman (Yuri) writhing with a man in an obscene outfit, and she involuntarily takes a voyeur with her hobby camera. That night, when she goes to greet her again, Yuri introduces her husband as a man who is different from the man she saw during the day. Sanada couldn't hide her shock, but she looked neat and she was actually obsessed with Yuri, and she started to think that she wanted to actually touch her, not just voyeur.
