Sang-hyuk and Jae-hee learn that Baek-ryeon was a witness to the Inwangsan disappearance incident. In order to protect Baek-ryeon, Sang-hyuk chases down the criminal like her knight in shining armor. Baek-ryeon is happy when Sang-hyuk protects her like Superman and doesn't get hurt even after the intense physical fight, and she gets very curious about his true identity.

Sang-hyuk, who stays the night at Baek-ryeon's house, dreams of Jeong-ah, and in the dream, Baek-ryeon is warned not to let go of the hand of the man of destiny. In real life, Baekryeon is put in danger as the criminal constantly keeps his eye on her while the number of murder victims increases.

The disappearance of a high school girl in 1993 still remains unsolved as Sang-hyuk, who was in charge of the case, has disappeared from the human world for decades. Sang-hyuk is convinced that the culprit of the missing high school girl case and the culprit of the Inwang Mountain missing woman case are the same person, and he actively participates in the investigation. Meanwhile, Baek-ryeon...