Seishun Gakuen Junior High School, or Seigaku, is a prominent school in Japan's competitive tennis scene, competing against numerous other schools to claim the top spot. The team's lineup is boosted by the arrival of Ryouma Echizen, a young tennis player from the West who aims to prove himself and overcome his famous father's influence. Ryouma joins the team, driven to surpass his father's name and his own expectations, and works to achieve his goal alongside his teammates.