Her husband worked as a freelance writer from home, and as his schedule grew increasingly irregular and hectic, he gradually stopped touching his wife, Nana. One day, Nana discovered BDSM-themed adult videos in his workspace. Irritated, she threw them into a garbage bag and tossed them out. However, that act triggered an unnatural relationship with their neighbor. Soon, Nana finds herself tightly bound and roughly taken, experiencing pleasure stronger than anything she's ever known. Though uneasy and frightened by the sensation of someone watching her through the lens, she becomes consumed by the overwhelming impulse.