A middle-aged mercenary and former hitman named Takashi Suzuki loses his battle with cancer, only to be reincarnated by a mysterious goddess into a fantasy world with a divine kill order: eliminate thirty-two heroes. These heroes are Japanese high school students who were summoned en masse, granted cheat-level powers, and are now plunging the world into chaos. Reborn as Rei and partnered with a beautiful and deadly elf warrior named Lydina, he must bring every skill from his past life to the battlefield, including modern combat tactics, classical martial arts, and his newly awakened magic. The story unfolds in a fantasy realm where summoned heroes have abused their status, creating widespread destruction and turmoil. As Rei and Lydina earn S-Rank status for their heroic actions, they are assigned a special appraiser named Eve, a sharp-eyed, blue-haired girl who wears an eyepatch. Eve immediately identifies Rei's apostle status and joins their cause with religious fervor. The trio travels to the dwarven kingdom of Melgid, where they cross paths with other heroes on a mission of their own. A confrontation escalates into a kingdom-wide conflict, with Rei commanding dwarven forces, magi-cannons, and golem troops to protect Melgid. Throughout the mission, which involves hunting heroes including a Sword Saint, an Arch Sage, and a deadly Necromancer, the goddess’s true motives remain shrouded and a larger conspiracy unfolds behind the scenes.