In a society where vulgar language is outlawed by the strict 'Law for Public Order and Morals in Healthy Child-Raising,' Tanukichi Okuma joins the prestigious public morals school. There, he is coerced by Ayame Kajou, the founder of the Anti-Societal Organization (SOX), to engage in lewd acts against the gifted student council president Anna, whom Tanukichi secretly admires.