In the wasteland world after nuclear winter, the strongest warrior Lu Jin will always have Bai Yueguang Su Wan, who died to save him, in his heart. Until Shen Wei, a medical soldier with a similar appearance, appeared, he was addicted to the substitute's comfort, but he didn't know that he had been involved in a shocking conspiracy. When the truth under the ruins is revealed - Su Wan has never died, she is already the leader of an extremist organization that promotes "purification of mankind", Lu Jin's faith and love instantly collapse. Between illusory obsession and real bond, he must join hands with Shen Wei to launch a final decisive battle against the ultimate BOSS who was once his love for the remaining humanity.