On the third night when rain and fog enveloped the old house, new tenant Lu Che picked up half a blood-stained jade pendant at the end of the corridor - it was the last thing left by his brother Lu Ming, who had been missing for three years. The owner of this old house, the lonely ancient book restorer Su Yan, happened to be the last person to see Lu Ming that year.
Lu Che stayed with doubts, but found Su Yan standing alone in the corridor when the fog was thickest, whispering to the empty green bricks. What's even more weird is that whenever the fog rises, there will be overlapping footsteps in the corridor, sometimes as heavy as Lu Ming, sometimes as gentle as Su Yan, like two shadows chasing each other repeatedly in the fog.
Following Lu Che's questioning, Su Yan's dusty past was revealed: three years ago, he and Lu Ming worked together to search for a manuscript about family secrets here, but broke up unhappy on a foggy night; and there was an unsolved case in the corridor of the old house as early as fifty years ago - a scholar who studied ancient characters disappeared here, leaving only scratches all over the wall that no one could solve.
When the other half of the jade pendant was found in Su Yan's repair room, the echo in the fog suddenly became clear: it was Lu Ming's cry for help, mixed with Su Yan's repressed confession for many years. The two finally understood that what was trapped in this corridor was never ghosts, but obsessions that they each dared not face - about betrayal, about concealment, and the care that was soaked in fog and never said out loud. To find out the truth about the disappearance, they must first get through the thick fog in each other's hearts.
Purpose: Using suspense cases as a carrier to explore the dialectical relationship between "obsession" and "reconciliation"