A baseball flying out of bounds has changed the life of peaches (Xinyuan garments), a sophomore at Sakuragi High School. She was hit on the head by a ball, from which she met the baseball department's popular player Oshima (played by Bendoto). Peach was infatuated with this charismatic player, but never found a chance to get close. Just at this time, she became acquainted with Longtaro (Yongshan Huadou), who often shouted on the roof. Ryutaro is the only member of the school's aid department. With the addition and promotion of peaches, the department has finally expanded to five people, and peaches have been promoted as the 50th generation leader. However, this temporary support department does not have any foundation, and even indirectly leads to the failure of the baseball department. Just at this time, the veteran of the aid department, the 23rd generation leader, Liu Yuan Yuan Zang (Naito Gangzhi), found them and took them to the training base. After a series of devil training, the five-man team of the Aid Department finally started, and they began to cheer for all kinds of competitions in the school.