Mother-in-law, Yuri, who runs a snack bar. Her son-in-law, Teppei, admires the unique sex appeal and sexy body of Yuri, who runs a night job. One day, Yuri hits her head while cleaning her and faints. Teppei, who happened to find her, tries to take care of her, but she is fascinated by the defenseless big breasts in front of her and ends up playing a prank on her. The desire of the son-in-law who knew the taste of her longing Yuri's body accelerated, and to the skeptical Yuri, "Let's check if that sperm is mine ...!" The two were stuck in a muddy affair that they could never tell their families.
