After an accident, Lin Yue gained the ability to travel freely between the two worlds.
On one side is the bustling city at night with strict rules, where he is just a frustrated employee who was fired and looked down upon by his lover.
On the other side is the great world of Gaowu Tianyuan, where martial arts practice is common, sects fight, and monsters are everywhere.
He sent metals, medicines and fine objects produced in modern times to the world of high martial arts, in exchange for cultivation techniques, magical elixirs and magical black iron weapons.
In the city, others think he is just an ordinary nouveau riche who made a fortune in a short period of time;
In another world, many sect leaders and demon realm rulers are all searching for the missing person who has crossed the world.
However, this exchange is not without consumption.
Every time he crossed the border, his body was gradually damaged.
When the crises in the two worlds began to infiltrate each other, and the shadows of monsters and beasts quietly descended on the city, and the city's guns and cannons met the martial arts and magical powers of the other world, Lin Yue realized that he had stepped into a huge conspiracy that spanned the two worlds.
"I make a living in the mortal world and become the king in the martial arts world."