When Dean, a mediocre adventurer, faces a horde of demonic creatures in a treacherous labyrinth, he stumbles upon a legendary weapon known as the Belzera, a sword fueled by the insatiable power of the Gluttony Empress, Belzebuth. Empowered by this newfound strength, he sets his sights on achieving the greatness of his idol, a top-tier adventurer, as he ventures further into the maze. Yet, lurking within the shadows of his ambition are unforeseen challenges...