Hidden in the alleys of Beijing is an unregistered Wuyou agency, which specializes in supernatural work that the authorities dare not take care of.
Qinglong Jiangcheng exchanged his life for strength and smashed the strange stories in the elevator with one punch; Baihu Jiangxu's IQ made him a god and broke the deadlock of the rules.
The master had been missing for three years, and a fragment of a Taoist robe led them to Yuying Middle School - the B-level school that was destroyed by fire and 404 teachers and students disappeared out of thin air.
The school bell is a countdown, school rules are fatal if touched, and wrong answers to questions will be immediately wiped out.
When the two brothers stepped into the campus, they discovered that this bloody killing had been tailor-made for the hosts of the Four Sacred Beasts!
