In a world where dirty jokes don't exist, where the mere utterance of a * word will thrust you into jail, a hero must rise up as a symbol for all things lewd and rude. The mysterious Blue Snow, proudly wearing panties on her face and armed with naughty images and a foul mouth, will bring the art of dirty jokes back! With her erotic terrorist group, SOX, she will press against the stiff authority of the oppressive Decency Squad and step on their hard and overbearing rules. Tanukichi Okuma is the son of an imprisoned ero-terrorist. Rather than following in his father's footsteps, he plans to stay on the track of morality and wholesomeness. Just like his dream girl, Anna Nishikinomiya, he attends Japan's most moral school. But after an encounter with Blue Snow, his virtuous plans are * and he finds himself entangled with SOX. Will the pursuit of smut tarnish what hope he has with the pure Anna, or will he * around, stimulated by the panty wearing deviant and her filthy mouth?