Ferment of Malice

[Suspense and brain-burning, social faction, hidden corner type, high IQ crime, multiple reversals, school bullying + revenge] Three years after graduation, a long-awaited gathering of teachers and students reunited at their mentor's house. The once high-spirited spirit has been replaced by the philistine of the adult world. At the wine table, four old classmates exchanged glasses, trying to cover up a gloomy past about junior high school with laughter. However, as some dusty past events were accidentally brought up, a bone-chilling chill began to ooze out of the originally cozy living room. The party was suddenly interrupted, and a sudden incident pushed everyone to the edge of life and death. During the investigation, the police found that someone seemed to have carefully prepared this "accident." As the investigation deepens, more and more evidence reveals the past events on campus. But what is the final truth?