The sun fell on the chalk dust of the self-study class of No. 3 Middle School. In the seemingly peaceful classroom, everyone was wearing a mask of lies.
The missing girl, the locked reading room, the unified rhetoric, a collective silence covering up human lives.
The young Lin Yan has eyes that can see through disguises. Following the scraps of paper and secret marks, he uncovers a three-year murder case, only to come across a dark chess game that spans sixteen years.
There are reversals one after another: the school director is just an abandoned son, the first-generation students build a secret circle, the serial murders are a test of artificial selection, and the endless reincarnation traps every generation of people who pursue the truth.
He is the creator of the chess game and the only variable in reincarnation.
When all the chess pieces, chess players, and dead souls are trapped, the young man cuts off his destiny with his true heart. It turns out that the deepest darkness is never the secret room of the school building, but the evil that the human heart refuses to extinguish, and the good that never gives up.