When the popular online game Yggdrasil is shut down, a lonely player named Momonga decides to stay logged in and take over this digital frontier.

Fang Han, a humble family slave, held the belief that "I would rather be a beggar than a slave" since childhood, and traversed the world by myself. With an unyielding stubbornness, he broke through the mystery of supernatural powers and forged his body into an immortal body. Work hard to step into the fairyland step by step, and eventually become the peak king.

Madness and unawakening sleep, Randolph syndrome. This new illness is slowly but steadily approaching humanity, caused by the huge underground world Asylum that appeared in Antarctica. There are strange creatures different from the earth, and unknown resources. People bet their lives on the depths of the mysterious new world to get huge wealth, organizational plots, or their own ambitions. And here alone, a young man with a wish in his heart is trying to challenge the front line of Asylum. (Source: MAL News)