In the heart of Tokyo, a curious teen girl, May, explores her budding sexuality. With her tiny frame and innocent face, she's a picture of youthful innocence, but her mind is filled with naughty thoughts. She spends her days sneaking peeks at forbidden magazines and late-night TV, her fingers dancing beneath her school uniform, imagining the touch of a lover. One fateful day, she encounters a mysterious older man who awakens desires she never knew she had, leading her down a path of self-discovery and taboo pleasures.