Episode 9 recap: Shao Feifei died by slashing her wrists in the hotel.

Lin Mo knew that Ah Xin was using Xiaocha's hatred towards her father to control her, so he told her about the information he had learned from the teacher. On the day Xiaocha got into a fight, Nawan had knelt down to beg the other party to forgive his daughter. Nawan also felt extremely guilty about his wife's death, which was the reason for his alcoholism. After hearing Lin Mo's words, Xiaocha realized that her father loved her. She tearfully confessed to Lin Mo that she never expected those people to kill her father. In addition, Lin Mo told her not to let Huang Po die in vain, so she sobbed and revealed the truth to Lin Mo.

Lin Mo asked Xiaocha while holding the key where the lock that the key could open was located. Xiaocha handed him a music box, and from that music box, Lin Mo found a USB flash drive. Because Lin Mo didn't reply to the message for a long time, Dulan could only let Ah Xin and Ouyi leave. Sasha, however, was somewhat unwilling and asked Ouyi to take off the ring. Dulan checked the ring but found nothing. Suddenly, Sasha pulled off Ouyi's wig and discovered that Ouyi was someone else in disguise.

Lin Mo called Sasha and discovered evidence in the USB flash drive that Jingxin Club was planning to kill Namu. Ah Xin knew he was in danger and decided to shoulder everything alone. Dulan ordered the airport to be surrounded, and in order to help Ouyi escape, Ah Xin commanded the members of Jingxin Club to wear masks with Ouyi's image and deliberately blocked the police. However, even so, Sasha still found Ouyi and caught him.

In the end, Ah Xin and Ouyi were both brought to justice. When Dulan was surrounded by reporters for an interview, Lin Mo and the female protagonist turned and left. Kiko video called Lin Mo and told him that she had figured out the matter he asked her to investigate earlier. Someone had hacked into the police station's server and altered Namu's distress call. After saying this, Kiko demanded compensation from Lin Mo, but Lin Mo pretended to have a bad signal and hung up the call.

Kiko's best friend was deceived by a scumbag who cheated her both financially and emotionally. In order to help her friend seek justice, Kiko hacked into the scumbag's computer and found many girls' photos. She exposed those photos and then arranged to meet the scumbag. When the scumbag saw that she was beautiful, he saw her as the next target and approached her, calling her "baby."

In a hotel room at the Gade Hotel, a girl named Shao Feifei was found dead, having slit her wrists in the bathtub. Policeman Lin Sen rushed to the scene with several colleagues. Since there were no other fingerprints present, Deputy Director Li Can hastily concluded that Shao Feifei had died by suicide. However, upon examining the wound on Shao Feifei's wrist, Lin Sen noticed that there was only one incision on the distal end of the radius bone, which made him suspect foul play.

In order to uncover the true cause of Shao Feifei's death, Lin Sen wanted to speak with her parents. However, her parents were grieving and firmly believed that their daughter had taken her own life. As a result, they refused to cooperate with Lin Sen's investigation. When Lin Sen's father, Lin Yingshu, came to see him, he witnessed this situation and couldn't help but complain about his son's thankless troubles.

Lin Yingshu was also a police officer. In order to gain his father's support, Lin Sen deliberately told him that the Chief was about to be promoted and that if he could solve this case, he would be in line to take over the Chief's position. This tactic proved effective, and in order to help his son become the Chief, Lin Yingshu immediately approached Lin Sen's subordinates and instructed them to assist him in solving the case.

Lin Sen's subordinates provided Lin Yingshu with a lead. There was a girl named Kiko who was a skilled hacker. If they could bring her in and have her log into Shao Feifei's online accounts, they would likely discover some clues. When they learned that Kiko was at a bar, Lin Yingshu hurriedly went there. Upon arriving at the bar, Lin Yingshu happened to witness Kiko reprimanding a scumbag. Seeing the scumbag reluctantly transfer money to Kiko, Lin Yingshu gained a newfound respect for her and quickly followed her as she left the bar.

Kiko noticed that she was being followed and thought that the scumbag had sent someone to deal with her. Just as she was about to call the police, Lin Yingshu urgently informed her that he was a policeman and that they were facing a challenging case in need of a computer expert like Kiko's assistance. After being initially rejected by Kiko, Lin Yingshu remained persistent and gave her information related to Shao Feifei, urging her to reconsider.