Riko's uncle, Masuzou, had a dream. A dream to impregnate his niece Riko, whom he had watched grow up since she was a child. However, contrary to his wish, he suffered from erectile dysfunction. So, Masuzou's desperate measure was to hire a 'surrogate impregnator'. 'I want to impregnate Riko with my own hands,' Masuzou's dream soon became an obscene obsession, descending upon Riko's body...
