In a strange city where all the clocks strike one more time, restorer Shen Yan received a bizarre commission - at three o'clock in the morning at the abandoned Xiyao subway station, Bai Ran, wearing a yellow raincoat, brought a blood-stained black module, just to read the information left by the missing journalist Ju An. The module lights up with the words "J-AN_12.13", Like a key, prying open the secrets hidden in the city: the thirteenth bell after the twelve bells rings is the tremor in the air, the ash falling from the vault, and the "abnormal signal" that someone has deliberately buried into the urban fabric.
In order to find Ju'an, the two followed the module's guidance to the "non-existent thirteenth floor" of the West Tower, but they broke into the polarization conspiracy of the "Bell Management Office" - they erased the "excess sounds" of the city and also tampered with people's memories. From the damp subway tunnel to the secret floor behind the glass curtain wall, from the underground well of the old clock factory to the hidden compartment of Huiqiao Clinic, Shen Yan used repair boxes to dismantle the noise barrier, Bai Ran used blood as a bargaining chip to guard clues, and Ju An's voice was hidden in tapes, modules, and low-frequency waves, guiding them to find the truth behind the "clockmaker" and the thirteenth bell.
