In 2030, "grey fog" enveloped the world, and mankind was forced into an era of "weird rules". Each city randomly generates a "weird copy", and those who enter must abide by the rules of the copy to survive. But there are traps hidden in the rules - some rules are fake and are weird baits used to kill people.
The country established the "Abnormal Event Management Bureau" to train "rule breakers", but the mortality rate is as high as 90%.
