Seul Hae finds a picture while searching through one of Cha Woong's boxes and realizes that there is an unpleasant connection between her dad and Cha Woong. However, Cha Woong chooses to run away from the situation by moving to a new house. Adviser Choi then tries to explain the details regarding the Full Moon Murder, but there is no way for Choi to talk to Seul Hae.

Realizing that he has a little something for Seul Hae, Cha Woong does his best to impress Seul Hae. While doing volunteer work at an orphanage, men who look like gangsters cause a scene, demanding that Head Yoon, the leader of the civil police unit, sell the land on which the orphanage is built. A few days later, while working at her store alone, Head Yoon gets ambushed, critically hurting her head.

Head Yoon lies unconscious at the hospital, and it turns out that the culprit is none other than her closest partner. Realizing that she has made the wrong call, Seul Hae starts the investigation from the beginning, focusing on the right suspect. The investigation continues, and Seul Hae and Cha Woong come up with a little magic show that would lead the suspect into confessing the hard evidence.