When Lin Xiao, a genius in materials engineering, entered the underground black market to save his critically ill sister, he was killed in an organ trading conspiracy and fell into the sea. He was rescued by the mysterious mercenary group "Raven". From the ivory tower to the battlefield of purgatory, he holds nano-modified firearms and fragments of humanity. In the shadow of gene warrior encirclement and AI war, he leads a broken team on a bloody journey - when rusty bullets penetrate the dark side of the world, they use steel to temper redemption, and carve the eternal paradox of betrayal and loyalty on the pinnacle throne...
