Gu Xi is a professional forensic doctor and the leader of the serious crime team.
Cheng Sijin, the child who was saved by Gu Xi, is now a member of the crime team and is Gu Xi's favorite person.
They solved a case together, but in the end, they discovered a secret. When the secret was spread, it was the day Cheng Sijin died together with the final boss, and finally...
Purpose: Let children better protect themselves