Deprived of what is regarded as the most crucial asset in basketball, Sora Kurumatani has contended with his short stature since he first fell in love with the game. Although lacking this advantageous trait, Sora's steadfast determination never permitted his small size to define his playing ability; he firmly believes in giving his utmost effort and practicing relentlessly to demonstrate his competence. Hoping to fulfill his mother's wishes, Sora enrolls at Kuzuryuu High School to join the basketball club and compete with full dedication in tournaments. However, he is disheartened to discover that the boys' basketball team serves merely as a hangout for delinquents who have no interest in the sport. Sora also learns that Chiaki and Momoharu Hanazono, brothers he comes to know, have likewise lost their former spirited drive to play. Resolved to restore the basketball team, Sora challenges the boys to a match against himself, where his quick feet and rapid movements overwhelm the group. Gradually influenced by Sora's impressive skills, sheer effort, and tireless devotion to basketball, the boys unexpectedly find their extinguished passion for the game reignited once more.