A man who is a voyeur lives in an apartment, and his neighbor moves in, a busty housewife named Ryōne. The man immediately takes pictures of her bouncing breasts and firm ass while she is jogging. Watching Ryone's breasts bounce as she runs, the man can't contain his excitement. Eventually, he isn't satisfied with just taking pictures, so he asks Ryone, who has just returned home, to help him carry his luggage, lures her into his house, and rapes her. The man who kidnaps Ryone calls in his coworker and further subjects Ryone to breast training.
