Choi Hyun-seok, who was once the mightiest man, begins a new life as a hero in another world after his death. "A hero who monopolizes wealth, fame, and beautiful women!" Dreaming of a glorious future, he arrives in the other world, only to encounter a monstrous beast with a head one size larger than his own. The monster, a high-ranking officer of the Demon King’s army, asked: "Hero? Are you the so-called hero?" "Uh… I guess I’m the hero…?" And so, hell began.