Yu Yan accidentally came to "parallel time and space", which is an unknown year and month after the collective mutation of mankind. There are ruins of the past of mankind everywhere. In the urban facilities of the past, a large number of mutant species gathered.
Yu Yan woke up in the wilderness and met a "wooden man" who lived alone away from other humanoid mutants. The wooden man shouldered the responsibility of taking care of the little humans, and the two of them headed for the city together. What would happen if a fully human before the end of the world lives with humanoid mutants?
Intention: It is difficult to pass the test, but there is hope even in the secret realm