The story begins with Li Na's retirement and her dedication to youth education, inspired by the development of the national sports industry. Tennis leagues for middle school students in various places are in full swing. Among them, the Yuqing Middle School tennis team has achieved great results and cultivated a large number of outstanding tennis talents. However, in this national league, Yuqing Middle School is facing the crisis of not being able to enter the national competition. Lu Xia joins the Yuqing Middle School tennis team as a transfer student. With his outstanding strength, he is determined to become the strongest tennis player. Unexpectedly, after joining the Yuqing tennis team, Lu Xia met various tennis masters and saw more possibilities. With everyone's help, Lu Xia realized the real fun of competitive sports. In the process of competing in the national league, he felt the joy of team life, and gained strength from the collective, leading the team to break through himself and move forward towards the set goals.