In March 2026, an unknown virus broke out in the city. The infected person will lose their consciousness in a short period of time, their body will be deformed, and they will become an "alienated person" who only knows how to attack and devour. Social order collapsed overnight, and the once prosperous city fell into ruins.
Lin Wan, 22 years old, is an ordinary company employee. She and her father were shopping in the supermarket when disaster struck. The moment the shelves collapsed, her father pushed her away, but he was rushed away by the chaotic crowd. Lin Wan woke up after three days in a coma and found that the world had changed. Her only thought was: go home and find her father.
Zhou Yan, 28 years old, veteran. When the disaster happened, he made an appointment with his girlfriend Su Ran to meet at the subway station, but he never could wait for her. He stayed in the shelter deep in the subway, looking in the direction of the entrance day after day - as promised, she would come. As promised, he would wait for her.
Two survivors meet in the dark. Lin Wan promised to wait with Zhou Yan for two days. After two days, whether she waited or not, she would set out to find her father. Two days later, what Zhou Yan was waiting for was not Su Ran, but a choice he had to make: continue to stay in this hopeless ruins, or accompany this persistent girl towards a wider unknown.
What they didn't know was that the disaster was far more complicated than they imagined. Where did the virus come from? Is it possible for those "alienated people" to recover? Sporadic broadcasts vaguely mentioned a secret project called "Project Ark", and rumors of "immune people" began to spread among the survivors - some people were naturally immune to the virus, and their blood might be the key to the antidote.
