Cheon Seo-jin took the stage to announce the winners, and the waiting students found that Eun-sung and Luna were gone. Despite Zhu Xijing's threat, Qian Ruozhen announced that Luna would win the grand prize, but Luna was not seen on stage to accept the award.
Suddenly someone came in and shouted that someone was dead outside, and the parents walked towards the door. Before falling into a coma, Luna seemed to have seen Min Xueya. Everyone was shocked to see the blood-covered person lying on the steps. When they saw Luna, Wu Yunxi hugged her with trembling hands and cried.
After Ha Enxing killed her, she went home in a panic. She couldn't even take off her skirt, so she cut it off. The parents were detained, He Yunche and Zhu Dantai had an argument, and everyone finished taking notes. The police suspected that someone in the school had a hatred relationship with the victim. The murderer deliberately set off the fire alarm. If he wanted to destroy the evidence, he should be a person who knew the inside of the school.
Luna was sent to the hospital operating room, Wu Yunxi waited outside sadly, Luna regained consciousness, and Wu Yunxi hurried in. Wu Yunxi came in with the trophy to talk to Luna, Luna opened her eyes, and after a while her heart stopped.
Zhu Xixun was waiting for Zhu Dantai at home. As soon as Zhu Dantai came back, he asked him if he did it. Zhu Xixun also believed that Zhu Dantai did it before the deaths of Min Xueya and Shen Xiulian. The two had a dispute, Zhu Xijing came to stop it, Zhu Dantai took out the necklace that had been dropped on the scene of the crime and asked who Zhu Xijing belonged to. When he learned that it was Ha Enxing, he did not say that it was at the scene of the crime, but said that it was at the scene of the crime. The arena is over.
After Qian Ruizhen learned that He Enxing did it, she comforted her daughter that she would help her deal with it, and instructed her daughter to say no to anyone who asked, Qian Ruizhen helped He Enxing burn the dress. Qian Ruizhen switched all students to online teaching, expressing her full support for the investigation.
Qian Ruozhen came to the school to take the trophy hidden by Ha Eunxing, but happened to be seen by Wu Yunxi and Jiang Mari. The two pulled Qian Ruijin apart and opened the students' lockers separately. Wu Yunxi opened Ha Enxing's locker and found nothing suspicious, but found a trophy in Zhu Xijing's locker. Xia Yunzhe hid in the dark. It turned out that he put the things in Zhu Xijing's locker.
Wu Yunxi and Jiang Mari left and took the police to arrest Zhu Xijing, Zhu Xijing struggled desperately, and Zhu Xixun called and told Zhu Dantai. Ha Yun-chul helped Ha Eun-sung transfer the trophy in time, but he still couldn’t believe it was Eun-sung.
Zhu Xijing was taken to the police station for questioning, and Wu Yunxi was very emotional and asked her. The results of the fingerprint investigation on the trophy were found, and many people's fingerprints were found, but there was no Zhu Xijing's fingerprint on it, and Zhu Xijing was proved innocent. Zhu Xixun even took out the photos taken in the background before the announcement of the results of the grand prize, and the only people who were not there were Bae Rona and Ha Eun-sung.
Wu Yunxi went to Qian Ruizhen’s house and questioned Ha Enxing. Ha Enxing was pale and had no confidence to speak. Qian Ruizhen rushed back and pulled Wu Yunxi out of Ha Enxing’s room. Wu Yunxi asked to see Ha Eunxing’s dress, and Qian Ruojin asked Teacher Chen to show Wu Yunxi the dress he had made not long ago.
The next day, the security uncle turned himself in, saying that it was Pei Luona who killed himself. After Ha Enxing saw the news, the security uncle was so kind to them, and she felt sorry for the security uncle. The same security uncle was more affectionate to Qian Ruijin than her father. She was about to be unable to hold on, and went to get drunk alone.