A story of the world accidentally falling into endless darkness. People found out that there is an ancient book in the underground palace deep in the desert. People in the underground palace are immortal. Whoever gets the book can control the universe.

Steelworker Nangong Cheng is dying from an infected wound when he encounters Zhuang, a stranger with a similar affliction seeking vengeance for his murdered wife. Cheng, a disciple of a traditional martial-healing sect, must use his final strength to help him.