Every night, the sounds of lovemaking leak from the walls... The Nishikawa couple move in next door to Asami, a middle-aged man living alone. The walls of this old building are thin, so the Nishikawa couple's lovemaking is audible. Asami's desire grows as he listens to the sweet voice of Yui No, the wife next door. One day, Asami intercepts a parcel addressed to the Nishikawa family and invites Yui into his house, where he rapes her. From then on, Yui No body begins to crave pleasure as Asami waits for her as she returns from throwing out the trash and continues to play pranks on her...