Zombies break out and civilization collapses. Former policeman Lin Han woke up from the hospital and the world was in ruins. Awakening with him, there was also a cold voice: [Activate the sequence evolution system, kill the infected, and obtain evolution points].
Strength, agility, perception, spirit... Strengthening oneself is the only way to survive. The red dot that appears on the retina warns of danger, and the highlighted mark in the scanning field of vision guides materials. In this dead city full of walking dead, he must rely on this mysterious system to survive.
However, systems are not gifts. Every bit of strengthening is pushing him to the edge of inhumanity; every kill is accumulating a price called "pollution degree." When he meets engineers who are struggling to survive, medical students who stick to their bottom line, and warrior monks who are wandering between killing and redemption, he discovers that he needs not only evolution, but also companions.
They establish a stronghold, fight against the mob, and survive the tide of corpses. The truth is more cruel than the doomsday - the "zombie virus" is not a natural disaster, but a taboo experiment called "Return to the Ruins". The system is a screening tool, the infected person is a failure, and he is the "key" to be selected.
On one side is the "Creator" Pure Land Alliance who is eager to dissect and study him, and on the other side are the fellow survivors who regard him as a monster. When the "final switch" that can end everything is placed in front of him, but the price is the lives of all evolvers, the last bottom line of being a policeman and the instinct of a survivor are fiercely torn in his body.
How can flesh and blood evolve? Civilization is dead, how can it be reborn?