Luo Bern (Du Fu) with his friend, investigated the death of his wife. Following suspect Xu Lingyue, they boarded a train bound for C City. Who knows that the train derailed on the way, more than a hundred surviving passengers wandered into the empty city of ruins, completely losing contact with the outside world. The city is in crisis and lacks supplies, survivors continue to die or disappear, and internal and external problems continue to be challenged. Quietly began a cruel «competition for survival», conspiracies, suspicions, betrayal, and the struggle of humanity, in a mysterious, empty city.