In the summer of 2006, Hee Sung and Zhi Won met for the first time at a convenience store. Xicheng bought a few cans of beer and went to Zhiwon to settle the bill. Because Xicheng moved in newly, Zhiyuan talked a few words. After many years, Zhiyuan dreamed of this scene again. At this time, Xicheng in the bathroom is holding a mobile phone, learning how to smile happily. When Zhiyuan woke up, she was very happy to see Xicheng preparing breakfast for herself.
After seeing the situation, Xicheng applied what she had learned and smiled just now. After Jiyuan washed Enxia’s hair, she went to clean up the workshop. After Xicheng learned, he hurried downstairs. Zhiyuan found a fragment on the ground, a fragment of a teacup that Hee Sung fell during a fight with Jin Wuzhen. Jin Wuzhen in the dark heard Zhiyuan’s voice and struggled desperately, but she had been pulled out of the workshop by Xicheng.
A woman came to her grandmother’s house and saw blood stains as soon as she entered the house. Her grandmother died tragically at home, and the blood ran all over the house. Zhiyuan and the police rushed to the deceased’s house and found that the deceased had the same method of death as the seven deceased in the 2002 serial homicide. They had their fingernails removed. At this time, the deceased’s son rushed in, extremely sad.
Xicheng went to the workshop to meet Jinwu Town. In the summer of 2002, Jinwuzhen and his friends tied Xicheng to a tree and tortured him in every possible way. Xicheng wanted to give him back what Jin Wuzhen had done to him. Seeing the hammer in Xicheng’s hand, Jin Wuzhen was terrified and begged for mercy. Xicheng did not kill him, but continued to lock him in the dark, making him feel pain and fear.
After forensic identification, the cause of death of the grandmother was excessive blood loss caused by multiple bruises. Several people discussed the identity of the murderer. The forensic doctor suddenly found some important clues on the fingers of the deceased. Learned that the deceased was wealthy and had a son in the family.
Jin Wuzhen didn’t know that Hee Sung in front of him was Ji Won’s husband, and threatened him to let him go as a police officer. When he learns that Hee Sung is Ji Won’s husband and the murderer of Li Chang’s uncle, he is emotionally broken. Zhiyuan suddenly became interested in the Lianzhou serial homicide case. After investigation, she found that the deceased in the case had their fingernails removed. The reporter of this case was Jin Wuzhen.
An Zheng, the son of the deceased’s grandmother, gambled for a long time, and when he learned that his grandmother had made a will before his death, he came to ask for money from Park Se-young who took care of his grandmother. When Park Se Young didn’t cooperate, An Zhengjiu pinched her neck forcefully. Fortunately, Officer Cui appeared in time.
En Xia was beaten up with a nosebleed because she touched the little bear of the child, Zhiyuan and the other mother quarreled. Xicheng arrived and asked Enxia to apologize. Jiwon is a little angry, but Hee Sung smiles to show her okay when he notices the emotion. Xicheng comforted Enxia, saying that no matter what bad things happen after such an apology, everyone will first doubt others instead of themselves. At this time, Xicheng has quietly thrown the children’s toys into the trash can.
Officer Cui showed the will to An Zhengjiu, and learned that there was no inheritance of his own, so he was angry and left. Officer Cui thinks that An Zhengjiu is the murderer, but Zhiyuan thinks that the murderer may be related to the owner of the lipstick. When the two were arguing, Zhiyuan accidentally found the lipstick mark on the will. Zhiyuan suspected that the deceased wrote his will in front of the murderer and pressed his fingerprints with the murderer’s lipstick. But the murderer was afraid of exposure, so he deliberately pulled out the nails of the deceased. Officer Cui also suddenly remembered the conversation between herself and Park Se-young. She had been guiding herself to lock the suspected target on An Zhengjiu.
Hee Sung discovers by accident that Jin Wuzhen has made an appointment to meet Nam Soon Gil. Hee Sung asks him the reason for the meeting, and the other party tells him that he is to investigate a serial murder. Xicheng dressed as Jin Wuzhen and went to the designated place and called Nam Soon Gil to ask him why he wanted to report Tao Xianxiu. On the phone, Nam Soon-gil said that Tao Xianxiu left the village in the summer of 2002, and that he was delivering food with him from the fall of 2002 to the summer of 2005.
They both ate and lived together, but he never thought that he was a murderer. And also the son of a serial murderer. Nam Soon Gil also bluntly said that he had been threatened by Tao Xianxiu and wanted Jin Wuzhen to protect himself. Nam Soon Gil also said that he received threatening phone calls from strangers every day, and he always thought it was Xicheng. When Xicheng heard it, he was very angry. It turned out that a few years ago, Nam Soon Gil wanted to harm himself in order to get his own money.
Ji Won came to Park Se Young to cooperate in the investigation, and Park Se Young put on lipstick in front of Ji Won. At the same time, Officer Cui gradually discovered the truth of the case. Park Se Young wore the blood-stained clothes back after he finished killing, but this scene was discovered by Officer Cui. Park Se Young intentionally scratched Ji Won’s face with an eyebrow trimmer when she was putting on makeup, and Ji Won hit Park Se Young with a pneumatic hand. When the police officers outside heard the movement and wanted to go in and have a look, Haijun stopped them in time.
Park Se Young was frightened by Ji Won and let her handcuff herself. It started raining at night, and Xicheng came to pick up Jiwon. At the same time, a man in a black raincoat came to the store and took a rope. Nam Soon Gil called Jin Wuzhen to leave a message, saying that he found Tao Xianxiu and his father Tao Xixian as serial murderers. The uninvited guest in the black raincoat came to the Sunji Hotel and killed Nam Sunji. Afterwards, the man in black came to an abandoned factory and nailed a newspaper with information on serial murders to the wall, and the wall was full of these newspapers. Jiwon wakes up suddenly, but Xicheng is not by her side. Zhiyuan went out to search, only to find that Xicheng was wearing a black raincoat and went home.
