In the tenth year of the apocalypse, Chen Jin is about to ascend the throne, but on the eve of his coronation, his most trusted brother, Su Yuan, stabs him through the heart. When he opens his eyes again, he has been reborn as the killer himself, forced to look through Su Yuan's eyes at the countless wounds left by his own iron-fisted rule. Su Yuan's soul, meanwhile, is cast back to the beginning of the apocalypse, trapped in the body of the brother he just killed, forced to relive the bloody rise he once forged with his own hands. Two souls, switched bodies, timelines out of alignment, each confronting his own crimes and punishment in the other's memories. When the truth cuts through the layers of mist, can they reach a long-overdue reconciliation before they are utterly crushed?