Junior high school student Shōyō Hinata gains a sudden love of volleyball after seeing a national championship match on TV. Although short in height, he becomes determined to follow in the footsteps of a star player, nicknamed the "Little Giant", after seeing his plays. However, his dreams are destroyed in his first official match, where his team suffers a crushing defeat against the Junior championship favourite team, which includes the so-called "King of the Court" Tobio Kageyama. Hinata vows to follow in the footsteps of the "Little Giant" and enter Karasuno High School to defeat Kageyama, only for the two to wind up as unlikely team mates. By combining the genius-like qualities of Kageyama with Hinata's sheer athleticism, the duo create a brand-new volleyball tactic. Their new combo allows them to get over their differences and creates a strange alliance between the two filled with fun and laughter for them and their teammates. Thus begins the Karasuno boys' volleyball team's journey to the top.