Late at night in the anatomy building of the medical school, tiny tapping sounds always echoed. I stayed with my boyfriend at school to explore the secrets, but found that he had hidden an old photo album. The senior sister in the photo disappeared out of thin air five years ago. The dark shadow in the mirror, the strange noise at three o'clock in the morning, the old iron bed that cannot be moved... All the strange sources point to an unjust case on campus that was buried by the powerful. Pseudo-supernatural, real-life disaster, layers of twists and turns until the real culprit behind the scenes is discovered.
