The Karasuno High School volleyball team has secured their long-awaited ticket to nationals after a resounding victory over Shiratorizawa Academy. Tobio Kageyama, a brilliant setter, gets invited to the All-Japan Youth Training Camp to compete alongside other nationally renowned players as preparations begin. Meanwhile, Kei Tsukishima has been invited to a rookie training camp for first-year students in Miyagi Prefecture. The eager Shouyou Hinata feels left out since he hasn't received any invites. Hinata, on the other hand, does not back down. He bravely decides to smuggle himself into the same rookie training camp as Tsukishima, transforming his fury into self-motivation. Even though Hinata merely gets a job as a ball boy, he sees it as a fantastic chance. He begins to think about more than just his skills as a volleyball player but also analyze the plethora of information available on the court and how he can apply it.