A black notebook appears out of nowhere: "Draw a smiley face," "Avoid the red words," "Sneak into the archives at night." Break the rules, and the abyss will swallow you at once.
Ordinary student Chen Mu is forced into the game. Looping staircases, shadowy figures in mirrors, the gaze of specimens in jars: the campus is full of deadly traps. He joins forces with Zhang Yao, a girl with a sixth sense, and Li Hao, a technical genius. They struggle to survive in the gaps between the rules, only to stumble upon a disappearance from twenty years ago, a bizarre ritual, and a family curse.
The school authorities obstruct them, a beloved mentor turns malevolent, and the notebook hides a consciousness of its own. This game is no mere fight to survive. It's a deadly trap that demands they uncover the truth and stand against the one who created the rules.
With the abyss at their side, breaking the game is the only way to live. Do you dare bet your life on the next rule?
