n a world threatened by darkness, high school student Kanoji and their classmates are summoned as heroes to defend the empire. While others receive praise, Kanoji is scorned as the "Conqueror," facing prejudice from both the king and peers. Determined to prove themselves and seek vengeance, Kanoji embarks on a perilous journey through the Sandworm Dungeon. With newfound powers of Dominion and Plunderer, they confront foes, uncover secrets, and challenge the empire's tyranny.