Maiko lost her beloved husband to illness 10 years ago, and has been raising her son on her own ever since. And as she grows older, her sexual desire grows stronger... Seeing the image of her late husband in her son who is growing from a child to an adult, Maiko is overcome with an uncontrollable urge... And so she takes her son's penis, who has yet to become a woman, into her mouth and welcomes it into her newborn vagina...