Naoya Inaa arrives to spend a year in a high school in Japan. He attends in a technical high school in which the location is famously known as the center for "water polo supremacy". His school, however, is the ridicule of the area and on the verge of closing down. Naoya loves the school because a young delinquent, whom he admired as a child, was once a student there. However, he soon realized that there are no real delinquents as hero figures, only students who spend their days meaninglessly. Naoya is disappointed and decided to do something about it.