At midnight, a mysterious rule book quietly appeared on Lin Mo's bedside. There are strange terms written on it: 1. Please be sure to fall asleep before three o'clock in the morning, otherwise you will never wake up. 2. Never respond to any call from the mirror. 3. If you find that someone's shadow is clearer than your own, please stay away immediately. When Lin Mo noticed that the shadow of his beautiful colleague began to twist, he realized that this deadly game had begun. With extraordinary observation and calm judgment, Lin Mo walked on the edge of death, gradually uncovering the truth behind the rules, and at the same time attracted the attention of many beauties with different personalities. The elegant royal sister, the pure school girl, the mysterious demon hunter, who is his true ally?