Ge Dong, an ordinary boy, discovered the so-called justice. The so-called law is not truly open. A mentally retarded good brother suddenly bites people like crazy and is taken back to the police station, but his whereabouts are unknown and no one cares about him. Did a person just disappear from sight? If one day someone around you disappears, will you find out? When you prepare to investigate, what on earth is the unidentified powerful classmate saying to him? What is hinted in each of his words, the sudden disappearance, being forced to die when he comes back, the perverted chemistry teacher, the sudden change of the principal, frequent jumping incidents, bizarre investigations and surveillance, human nature, reincarnation, justice, and who is controlling all of this?