The milk ordered by Xiao Li mysteriously disappeared one after another. Every morning, the milk crates seemed magically empty. A camera was installed and it was discovered that the person stealing the milk was the seemingly enthusiastic Aunt Wang next door. But the strange thing is that she always wears a mask when stealing milk, as if she is hiding her identity. She also knows the location of the camera and deliberately avoids it. Like a ghost in the night, she moves quickly and silently. Xiao Li switched to cash on delivery, thinking he could end this "mystery of missing milk". However, a few days later, he received an anonymous warning with four shocking words written on the paper.
