The apocalypse is coming, the virus tears apart civilization, and the survivors eat each other for a living in the ruins. Chu Jin was once the sharpest knife in the military, but now he was demoted as a "waste", dragging his body to lick blood on the edge of the corpse tide to survive. Until he met Ji Xiao, a lone wolf who never spoke and only spoke with a knife. The blood-stained military thorn in his hand had penetrated the throats of thirty-seven mutants. The two were forced into the same underground shelter. One was spurned, the other was feared, but they tore a way out in blood and fire. When the upper-level forces wanted to liquidate the "sources of pollution," they realized that the real doomsday was never the virus, but the human heart.