"Mayu", an honor student who attends a school in Tokyo, belongs to the sports club and is a serious student with a strong sense of justice in both literary and military arts. One day, Mayu, who came to practice alone on the rooftop, witnessed a dropout student, Meguro, using legal drugs and warned her. Then her teacher "Nakata" also appears and reprimands "Mayu", but "Nakata" is also her bad teacher... And the two of them set their sights on Mayu, and on the eve of summer vacation, when there was talk about her going on to higher education, they called Mayu and confined her...
