Shota and his two friends go to Akihiro's house to play, but Akihiro goes to school. Akihiro's mother invited the three of them into the house, and the three of them stormed Akihiro's house. While cleaning, because the dress she was wearing was quite short, it exposed the sensitive parts of her body that Akihiro's mother had aroused the children's sexual desire, they kept groping her but still didn't see enough. They eventually tied her up and made love to her... After that, Shota seems to have even more sexual desire, he looks for an opportunity to have sex with Honda – his neighbor and Momomi, Honda's friend and Akihiro's mother...