Asta and Yuno were left at the same church on the same day. Growing up together, they learned about the "Wizard King"—the title for the kingdom's strongest mage—and vowed to compete for the role of the next Wizard King. Yet, as they matured, the sharp contrast between them became clear. While Yuno wields magic with incredible power and control, Asta lacks any magical ability and trains physically in a desperate attempt to awaken his powers. Upon turning 15, Yuno is granted a spectacular Grimoire featuring a four-leaf clover, whereas Asta receives nothing. Shortly thereafter, Yuno is attacked by a man named Revchi, who aims to seize Yuno's Grimoire. Asta attempts to fight Revchi but is outmatched. Though hopeless and on the verge of defeat, he finds the strength to persist upon hearing Yuno's voice. Channeling his inner emotions in a rage, Asta obtains a five-leaf clover Grimoire—a "Black Clover"—which grants him sufficient power to defeat Revchi. A few days later, the two friends set out into the world, both pursuing the same goal: to become the Wizard King!