A cartoonist accidentally killed his best friend, and came out with a creative way to dispose the body. He soon found that his best friend was sleeping with his girlfriend, and drawn the attention of a serial killer.

Yeh Hsin is a top student in criminal psychology while her father is a distinguished cardiologist. Her boyfriend, Lin Miao, is a young forensic specialist. Everything seems perfect for Yeh Hsin until human remains are discovered in her backyard one rainy night. Around the same time Yeh receives a mysterious letter warning her that her life is about to change drastically.