Hao Changan's life has always been extremely dull. As an adopted son similar to a long-term worker, Hao Changan thought that he would leave home and start his own working career after graduating from high school. However, a sudden fainting during his senior year of high school made Hao Changan discover something unknown about himself. An admission application that looks like a suicide note, a group of weird classmates, and a confusing life experience, everything tells him that what you are about to face is an unusual world.