The son accidentally sees his mother, Aguri, shaking from sexual frustration in the middle of the night. In an effort to save her, he bitterly asks his friend, the school's top playboy, 'Sleep with my mom.' When the two are alone during the son's absence, the playboy quickly moves in on Aguri. A body that has grown plump with age is mercilessly developed by a young man's superlative technique. Unable to resist the intense taboo of her son's friend, the mother's long-starved flesh gradually falls into the abyss of pleasure...
