A meteorite landed on the earth, and a mysterious virus from aliens was attached to the meteorite. The virus spread rapidly to every corner of the earth. A sudden outbreak occurs after an incubation period of several days. Overnight. More than 90% of humans in the world have become zombies. Look at a college student. How to grow step by step in the apocalypse. How to preserve a pure land for mankind.
Concept: the details of human growth.