They were the labyrinths connected to "Gates" that had suddenly appeared. These labyrinths plunged humanity into chaos, yet they also held an irresistible allure.Only "Conquerors"—Players who have awakened special "Skills"—can stand against the "Enemies" emerging from the Gates. To save the world, they all strove to become the strongest Conqueror.The protagonist, Sota Sezaki, was born to Conqueror parents but failed to awaken himself. To make matters worse, his ability to "see ghosts" led others to treat him as an incompetent freak.One day, he enters a Gate at the invitation of his childhood friend, Takuto, only to be attacked by a maximum-difficulty Gate Boss: the Queen Spider.Facing certain death, Sota finally awakens.His skill allows him to inherit the abilities of the dead by resolving the lingering regrets of the ghosts within the Catacombs.And appearing before him was none other than the "wandering soul" of his father—the strongest pyromancer, who had fallen in battle...Now, accompanied by his new fireball companion, Sota challenges the Catacombs to become the strongest Conqueror!