In the seemingly peaceful university, the mysterious "He" arrives, awakening the resentment of the past. The campus is shrouded in strange rules. Triggering the rules means death. Students die mysteriously, and panic spreads. The protagonist Zheng Mo was originally ordinary, but due to this incident, his fate was intertwined with that of Lin Yu, Chen Feng, Su Yao and Zhao Yang. Lin Yu discovered a diary that recorded the death of students who were bullied and oppressed by teachers many years ago, and realized that this was the source of everything. In order to unravel the obsession of the deceased and restore peace on campus, the five people embarked on a journey to find out the truth. However, every time he gets closer to the truth, strange rules come to block him, such as the automatic arrangement of tables and chairs in abandoned classrooms, cold voice warnings, etc. Although they have no special abilities, they persist in the investigation with trust and courage. However, the school concealed the tragedy that year and misled them in the direction of their investigation. At the same time, the death toll on campus continues to increase, and they are under tremendous time pressure. In the end, they found the key figures, dug up the bodies, uncovered the truth, and broke the strange rules. Calm returned to the campus. Zheng Mo also changed from self-preservation fear to firmness and bravery, and the five became close friends in life and death.
