Modern doctor Lin Yan transmigrates to Northeast China in 1940 and becomes an experimental assistant in Unit 731.
He witnesses his compatriots being vivisected and finds himself in a living hell, with his life hanging by a thread.
By chance, he gains a golden finger that lets him analyze the structure of life and acquire abilities.
By dissecting Japanese corpses, he gains combat skills, resistance to viruses, and surgical precision.
He can save people from the brink of death, but he can also fight violence with violence, slaughtering Japanese soldiers like dogs.
While others struggle just to survive, he quietly builds his strength and proceeds one careful step at a time.
In the end, he will lead the prisoners in an escape, destroy the germ warfare program, and expose its heinous crimes.
Armed with evidence, he will bring the war criminals before an international tribunal and leave them nowhere to hide.
He crawls out of hell, wielding his scalpel like a sword, sworn to destroy the Japanese invaders and defend his homeland.
He is death itself. Wherever he goes, justice will be served and blood debts repaid.