Zhu Xiao took a vacation to prepare for the wedding, but he was still worried about the case.Lin Hui traces the source of the chicken soup and eliminates the suspicion of the restaurant owner. Zhu Xiao speculates that the murderer may be pretending to be a food delivery person.Zhong Huihui had a crush on Zhu Xiao, and Meng Jianchao became jealous after seeing her thoughts. The emotional rift between the three began to affect the direction of the case.