When the mirror begins swallowing shadows at midnight, and snake-shaped patterns on the desks seep blood, Lin Wei, an ordinary high school student at Mingde High School, discovers that her campus is actually a deadly game of hunting disguised as an "awakening of supernatural powers." Every participant is granted an ability by the System, yet also becomes an "experimental subject" for a mysterious organization. Behind every rule lies a deadly trap, and every flutter of the heart could trigger a fatal crisis.