Three Calamities: zombies, machines, and aliens.
Surrounded by zombies, humanity successfully evolved into the Awakened. Their supernatural abilities let them fight back against the undead, but then even higher-level C- and B-rank zombies began to appear.
In ancient ruins, humanity discovered the existence of machine cores and the mechanical power that could overturn everything people knew. But when this power was invented, it became the second calamity, turning against humanity!
The machines built the Overlimit City, awaiting the arrival of the third calamity: the aliens!
There are hardly any human settlements left on Earth. After years of tireless research, scientists developed weapons capable of negotiating with the Three Calamities.
But no one ever imagined that these weapons were created under the control of the aliens.
Qin Xuan was trying to get this news back to the base when zombies intercepted him. His entire group was killed.
By some miracle, Qin Xuan returned to the day before the apocalypse began, a hundred years in the past. This time, he will evolve to the pinnacle of the Three Calamities!