When Gu Shen opens his eyes again, he has become a lowly jailer in the Imperial Prison of the Imperial City Office of the Great Yin Dynasty.
Outside, the Great Yuan Dynasty watches like a tiger eyeing its prey. Within, rebel armies rise across the provinces.
The court is corrupt and incompetent, treating the lives of the common people as worthless as weeds. The martial world is rife with strife, where there is always someone stronger than the strong.
When Gu Shen discovers that he can absorb the mysterious substance produced when prisoners die and use it to nourish himself, he decides to quietly cultivate in the Imperial Prison until he becomes one of the greatest experts under heaven.
