An eight-year-old girl woke up in Chiyou Valley with no memory of the past. Only the half-hidden Tong Tiankui on her chest indicated that she was an extraordinary child. The Lord of Chiyou Palace took her in and asked her to serve him as a "Scorpion". Eight years later, she has completed many tasks and killed countless people. As she grows older, the Tongtiankui attacks in her chest become more and more frequent...