Twenty-two-year-old Shen Qingyuan is just an ordinary girl who has just graduated.
On the night of the graduation dinner, she missed the subway and was forced to catch the last bus No. 13. There was no driver in the car, the passengers looked numb, and the car door slammed shut behind her - that door split her life in half forever.
The bus stopped in front of a dark building, with two large bloody characters carved on the door lintel: Strange Territory.
A mechanical voice sounded in her ears:
"Those who are cursed will enter eternal night. After completing the trial, the living will remain and the dead will disappear."
Every 72 hours, she will be dragged into a strange copy - the bleeding locker in the abandoned teaching building, the missing companions in the isolated island lighthouse, the ghost in the mirror of the barber shop at midnight, the cycle of death that can never escape from the cycle hospital... Each copy is a carefully designed trap, and every step may trigger a fatal murderous intention.