Hinata Shouyou, upon seeing a volleyball match, is aiming to become "The Small Giant", and joins his middle school volleyball club. After finding new members, they set out for the middle school tournament, where they've cross paths with a formidable school with the "King of the Upper Court", Kageyama Tobio. Although their team lost, Shouyou is still determined to aim for the top and exact revenge on Kageyama. Upon entering high school, he recieved the biggest surprise--he and Kageyama are on the same school and club!