Luo Ran has been investigating the death of his wife with his best friend Ning Yu. They end up getting onto a train headed for C City in order to chase female suspect Jiang Xue. The train suddenly derails mid-journey, and the hundred or so survivors find themselves transported to a ruined city with no living soul in sight, cut off from the rest of the world. The city is filled with dangers on all sides and supplies are dwindling. The survivors start dying off or disappearing one by one—a brutal game of survival begins....

The ex-special police officer Zhou Dongyang went overseas alone to find his comrade Liu Xiaogang's kidnapped son, Taotao. Venturing into the den of crime, he fought against the criminal group and ultimately destroyed the enemy's lair, rescuing the trafficked child. This story crafted the image of a tough Chinese man who values friendship, commitment, and despises evil. Especially notable is how Zhou Dongyang, due to his own mistake that led to his captain's sacrifice, fell into a period of indulgence and negativity after retirement. However, through this journey of braving dangers alone, saving Taotao, and destroying the enemy's lair, he rediscovered the spirited feeling of his youth, achieved redemption, and found a positive direction in life again....