"Only monsters can survive the Nightmare... but what if you have to become a slave to your own shadow?" Growing up as an impoverished street urchin in the depths of a decaying society, Sunny had nothing to his name. But his miserable life takes a turn for the worse when he is infected by the Nightmare Spell-a cursed phenomenon that drags random individuals into a ruined, parallel world overrun by terrifying monsters. To survive and return to reality, Sunny must conquer his "First Nightmare." In a desperate battle against death itself, he awakens a unique and unexpected power: the ability to command shadows and uncover the world's deepest secrets. Yet, this divine blessing comes with a cruel catch-a curse that strips him of his absolute freedom. Thrown into a ruined world of deadly dungeons, ancient horrors, and relentless survival games, Sunny must rely on his cunning, ruthless pragmatism, and shadow magic to stay alive. In a realm where trust is a lethal mistake, he will do whatever it takes to break his chains.