Sister's Stationery Store

My sister and I depended on each other, but a car accident took away my only relative. I rushed back overnight from working in the south, but my sister died in an extremely tragic way. After an investigation, it was concluded that it was a traffic accident. I continued to run my sister's stationery store, and one night when it was about to close, an ethereal voice said, "Mobile phone number 4777, I want to pick up the courier." A woman in red slowly came in with a pale face... Strange things in the small town happened one after another, and the truth slowly emerged...