In order to track down the hidden secrets of old cases involving his master, He Zhao disguises himself as a man and travels around the world. To the outside world, he only appears to be a wandering doctor with ordinary skills, pretending to be a pig and eating the tiger. She is proficient in toxicology and medicine, and can always deduce the truth from the clues at the crime scene. She deals with the disputes between various factions, uses human wisdom to uncover the layers of fog, and uncovers the real culprit who framed the teacher.
