Wuyu, a small island connected to the mainland by a cross-sea bridge.
Fifteen years ago, a person died on the island. The case was settled quickly, and the conclusion was unexpected - but is the truth true?
When the warehouse was cleared at the end of the year, an old hard drive with only a device number was unearthed from the scrap pile. When the phone was plugged in, the video was so blurry that it didn't match the memory from fifteen years ago.
Things have started happening again on the island recently, exactly like what was sung in an old fishing ballad.
The person who repaired the surveillance system connected the disk to power and scrolled down frame by frame.
The auditor returned to the island with his mother's words before she died: "Don't think about that again."
What he can see is every frame in the surveillance camera. What is invisible is the secret between frames.
When the truth is pieced together frame by frame, who is the person outside the camera.
--"Shadow Outside the Pupil - Frame"
