In a continent shrouded in haze and fear, the epidemic is raging like a raging tide. A small town is the first to bear the brunt and is drawn into the center of this terrifying whirlpool.
The epidemic doctor Arthur, wearing a black robe and the iconic bird's beak mask, stepped into the town alone, carrying the mysterious knowledge inherited from ancient books and oral instructions from his predecessors. His past is closely connected with the epidemic. The painful memory of his childhood town being devoured by the epidemic drove him to fight to save lives.
At the same time, Isabella from the Holy City of the Rising Sun, with blond hair and blue eyes, came powerfully with light magic, but she clashed with Arthur over their ideas and identity. Roland of the Blade Knights, who had a fatal friendship with Arthur, led the knights to come to support.
In the process of exploring the source of the epidemic, they discovered taboo symbols and mysterious maps, and gradually uncovered the cultists' shocking conspiracy to awaken the old rulers. The madness of monsters and the strangeness of dark rituals make every step full of danger. Whether Arthur and others can rely on their own strength and wisdom to win this battle with evil and prevent the world from falling into catastrophe has become the biggest suspense of the story.