The apocalypse is coming, and a fatal rule will appear every day around the world.
When you hear a knock on the door, you must open the door. No human voice is allowed in the city. Each building can only accommodate a maximum of ten living people... Those who violate the rules will be directly erased.
When all the survivors could only obey, Gu Heng, a fire protection facility inspector, discovered that he could change one Chinese character in the rules every day.
Open doors become locked doors, voices become ringtones, ten people become hundreds.
One word can completely reverse the situation of certain death.
Gu Heng relied on his calm judgment and layers of backup plans to rescue his sister, build a shelter, and lead his partners to hunt down the disaster. However, each change makes the rules more focused on the world. When the seventh word change was completed, the "corrector" who specialized in erasing the changers arrived.
In this apocalypse, others are looking for ways to survive under the rules, but what Gu Heng has to do is to make the rules work his way.
