What will erupt from a reunion of nine old classmates who haven't seen each other for a long time? Under the sunshine, what kind of shadow does this seemingly ordinary student union hide? A sudden outbreak of murders followed one after another, gatheringThe initiator of the meeting, Liu Junhao, died, and there was actually more than one killer. This is a true Chamber of Secrets murder! Can Fang Ming break through the fog and uncover who the real culprit is? Everyone's rebellionEveryone should be different, everyone is trying their best to distinguish themselves, while also doubting others. Who is really saying what is true, and who is the hidden disguiser... who is it? With what purpose, there will be moreWhere did the old classmate of Nian start? The story is still ongoing