One day in 2030, the peaceful university life was broken. A plane came from nowhere and crashed at the airport next to the school. Some unknown virus in the plane was leaked. Once humans are infected with the virus, they will mutate into zombies, and a small number will even turn into more dangerous mutations. Lin An and Yinuo's school soon fell, and they were forced to the roof of the building by zombies. They chose to jump off the building when they had no other choice. But things were far from as simple as they thought. They actually went back two hours before the virus was leaked...
The real story has just begun......
Purpose: Survival in the future