The story centers on an introverted high school student named Hoshimiya Eiji with a huge secret - he wished for the destruction of the world when he was younger. Fairies give certain people special powers called Orders. What Order Users can do with their power depends on their wishes. 10 years after the Great Destruction, Eiji struggles to come to terms with his immense power.

A chance event triggered Shouyou Hinata's love for volleyball. His club had no members, but somehow persevered and finally made it into its very first and final regular match of middle school, where it was steamrolled by Tobio Kageyama, a superstar player known as "King of the Court." Vowing revenge, Hinata applied to the Karasuno High School volleyball club... only to come face-to-face with his hated rival, Kageyama!