As soon as Lin Ye's camera captured the moment when the last subway train entered the station, the screams in the carriage pierced the night sky - all the passengers disappeared en masse before arriving at the station, leaving only the amnesiac girl Su Xiao huddled in the corner.
As the only witness, Lin Ye was forced to join forces with Su Xiao, who was in charge of the case, to investigate. All the surveillance systems had been tampered with, but the old route map in Su Xiao's backpack pointed to an abandoned hospital under the subway. The list of missing persons exactly overlapped with the victims of medical accidents in the hospital thirty years ago.
What's even more weird is that every midnight, the empty subway will reappear on time, and the afterimages in the carriages will distort under the light, seeming to tell the hidden truth. When Lin Ye discovered that Su Xiao's birthmark was exactly the same as that of the girl who died in the accident, they realized that this train not only devoured passengers, but also pursued blood debts spanning thirty years. Will it be them who disappear next time the car door closes?
