Episode 20 recap: Zhong Yi discovered a clue.

Zhong Yi remembered the phone call he received when he took his mother to the hospital before she passed away. He also recalled the day Chen Yu left and thanked him. He realized they were identical and hurried back to the police station to check the surveillance footage. Zhong Yi saw the video of Lv Yi Dao leaving and confirmed that the person was indeed Lv Yi Dao, and Chen Yu was his previous name.

Captain Hao gathered everyone for a meeting and informed them about Lv Yi Dao's situation. He stated that it was now clear that Lv Yi Dao's brother was currently serving a prison sentence, and Lv Yi Dao sought revenge on his behalf. Zhong Yi carefully examined the surveillance footage of Lv Yi Dao visiting his brother and discovered that Lv Yi Dao mentioned the name Zheng Da Qian, mistaking him for the target.

Zheng Da Qian, who is currently undercover, is about to infiltrate the fraud gang. While traveling with a member of the gang, they made a purchase of nineteen yuan at a convenience store using a credit card. Captain Hao and the others interrogated Lv Yi Dao's brother, and Captain Hao expressed that Zhou Zheng had betrayed them by kidnapping Lv Yi Dao. He urged him to reveal the truth so they could rescue Lv Yi Dao.

Lv Yi Dao's brother looked at the photos and mentioned several possible places where Lv Yi Dao could have gone. Interestingly, there were three villages that were approximately nineteen kilometers away from Zheng Da Qian's location, which matched the information. Captain Hao instructed Zhong Yi and Yi Xiao Fan to go there and assist with the investigation.

Lv Yi Dao gathered everyone and mentioned making money during the Spring Festival travel rush, as many people had been deceived.