Yuki Seijyo married as a second wife to a family with three sons. Even though she is a mother-in-law, there is a beautiful woman who suddenly lives with her. It doesn't take long for adolescent sons to be driven by libido, and they gradually seek to go. Yuki gradually awakens to pleasure as she is used as a sexual processing tool for her son-in-law almost every day. Yuki Seijyo's full-scale night drama that plays a beautiful mature wife who feels panting while killing her voice next to her husband sleeping!