Suzune, a busty married woman, moves into an apartment next door to a man who is obsessed with voyeurism. The man immediately takes secret photos of her bouncing breasts and firm buttocks while she is jogging. Watching Suzune running with her bouncing breasts in focus, the man can no longer contain his excitement. Eventually, not satisfied with just taking secret photos, he begs Suzune when she returns home to help him carry her luggage, and then invites her into his house and rapes her. The man, who has imprisoned Suzune, calls in his coworkers and further trains her busty breasts.