What would it be like if the common mana system in the world of monsters and beasts disappeared, and instead we chose to vigorously develop technology...?
In 1573 AD, or the first year of Wanli, Huo Haien, the young proprietor of a trading company who had been sailing with the fleet since childhood, was attacked by a group of mysterious weirdos on the day he returned. He was rescued by a mysterious white-robed woman and taken to a plane dominated by monsters in a near-kidnapping manner. The world that unfolded before his eyes was one of highly developed technology, companies alternately taking power, and serious class divisions. This was Shanhai City, and Huo Hain, who accidentally broke in, became the only human being in the city. Divine beasts, ferocious beasts, the Yellow Emperor, Chi You, companies, gangs, civilians, prosthetics, the Internet... He will be coerced by all forces to begin to understand the whole city and uncover the truth about the entire world step by step.