A psychological thriller about a family in a dilemma after the best profiler in Korea learns the secret of his daughter who is related to the crime of the Shaman. Han Suk-kyu plays "Jang Tae-soo", the best profiler in Korea and a father who raises his only daughter alone. He is a legendary figure who started his career as a criminal action analyst last year and is highly respected and prestigious within the police organization. However, due to a certain incident, not only his professional beliefs, but also his relationship with his beloved daughter are completely shaken. In order to protect his daughter who is everything to him, he fights alone to uncover the truth. A perfect and respected person in his profession, but alienated as a husband and father.