Salaryman Sanada moves into an old apartment alone. My room is still untidy, but I head to say hello to my neighbor's house. There, he witnesses the woman next door (Yuri) writhing with a man in an obscene outfit, and involuntarily takes a voyeur with his hobby camera. That night, when I went to say hello again, Yuri introduced a man who was different from the man I saw in the daytime as my husband. Sanada couldn't hide his shock, but he became fascinated by Yuri, who looked neat but was actually obscene.