Shōyō Hinata, upon seeing a volleyball match, aims to become the next "Little Giant" and thus, joins his junior high volleyball club. After finding new members, they set out for the junior high school tournament, where they cross paths with a formidable school with the "King of the Upper Court", Tobio Kageyama. Although his team lost, Shōyō is still determined to aim for the top and exact revenge on Kageyama. Upon entering high school, he receives the biggest surprise; he and Kageyama are in the same high school volleyball club!

Along the way, Hinata and Kageyama push each other into reaching their full potential and Hinata develops relationships with his first real team, thus beginning Karasuno's journey of redemption to restore their reputation and make it to Nationals.