Following their triumph over Shitenhouji Middle School in the semifinals, Ryouma Echizen and the Seishun Academy Boys Tennis Team prepare to clash with the reigning champions of Rikkai University-Affiliated Middle School for the national championship. Rikkai, thirsty for vengeance after their prior defeat to Seishun in the Kanto Regional Tournament, is determined to secure a third consecutive title. The climax of Tennis no Oujisama sees the legendary 'Prince of Tennis' dueling the enigmatic 'Child of God' in a high-stakes showdown for the ultimate crown. Amidst the fierce competition, Ryouma embarks on a journey to impart a valuable lesson to both his adversaries and comrades: tennis transcends mere victory.