The Little Bears and the Silver Eagles are the campus baseball teams of Moon Island Middle School and China-Canada Middle School respectively. For a long time, the Little Bears have been suppressed by the powerful Silver Eagles. In an extremely fierce game, the Little Bears were about to be defeated. At this juncture, a high school boy named Xiaosong (played by Wang Yuan) stepped forward and earned a point for the team. Although this point was difficult to save the situation, it made the members of the Little Bears regain their fighting spirit. The successive failures put the Little Bears in the crisis of disbandment. At this time, the main force of the Silver Eagles, Wu Tong (played by Wang Junkai), transferred to Moon Island Middle School and became a member of the team. As time went on, a solid friendship developed between Xiaosong and Wu Tong, and this friendship closely linked the teammates. Yin Ke (played by Yi Yang Qianxi) was once a baseball player, but he stayed away from the sport due to various accidents. Xiaosong's enthusiasm and fighting spirit infected Yin Ke, making him think of returning to the court.