When the classroom pendulum points to midnight, the entire campus becomes a taboo chessboard. Lin Qi, a senior high school student, accidentally discovered a yellowed fragment of rules while on duty, and was involved in a weird campus survival game. The seemingly ordinary classroom transforms into a maze of flesh and blood in the darkness, with disappearing desks, flowing blood symbols, and breathing walls. Every detail hides a deadly trap.
"When you count the chairs, it's time to open the door." Following the guidance of the mysterious note, Lynch and his roommate Han Li stepped into the mystery of death in the midnight classroom. When Han Li was swallowed by the creeping wall, when the girl in white in the restricted section of the library left a bloody key, and when the dusty diary in the principal's office revealed the human experiment thirty years ago, Lynch gradually discovered that following the rules may not necessarily lead to survival, but breaking the rules will definitely become part of the rules.
In this cursed campus, every mathematical formula is a survival code, and every ancient book seals the soul of the dead. Under the flagpole of the playground before dawn, what awaits him is not only an escape route, but also the bloodiest ending of the entire strange story about rules. When the bloody moonlight envelopes the teaching building, Lynch must use the last uncontaminated rule to start the ultimate game with the "principal" who made the rules in the secret room underground of the library...
This is a battle of survival using logic against chaos. When the classroom is no longer a classroom and the rules are no longer rules, only by uncovering the truth that "rules are lies" can the bloody curtain that has shrouded the campus for thirty years be torn open.
