Detective Lin Mo accidentally awakens his "third eye" while handling a case. If you close your eyes for more than three seconds, you will fall into a "dangerous situation" where you will inevitably die. There are ghost buildings with cyclic killings, buses demanding lives at midnight, and people in the mirror who will imitate you... Only by cracking the rules can you open your eyes.
Until one day, he saw his fiancée Su Nian, who died in an accident three years ago in the depths of the mysterious world.
"Don't come in," she said, "but if you must come - I'll wait for you at the end of the twelfth door."
Twelve treacherous doors, all of them are dead.
But she was the only way to survive.
