Plot episode introduction:

Episode 1

On this day in 2020, archeology lecturer Zheng Sibin came to the bookstore to pick up books, but he did not expect that the last one would be signed by the author. The book was obtained by medical student Qian Zhongfan, and he wrote on the book. Zheng Sibin came to buy books for a friend who is an immigrant. When she met Qian Jongbeom, she lost her mood. Zheng Sibin walked out of the bookstore and found snow falling in the sky. Prosecutor Kim Soo Hyuk who was passing by accidentally bumped into her, and the two passed by her.

Episode 2

Kong Zhizhe hurried to Zheng Xiaen’s bookstore. Four years ago, Kong Zhizhe was working on the construction site and he met Zheng Xiaen who worked in the church. Kong Zhizhe often went to Zheng Xiaen's bookstore to read books, and also went to church to listen to Zheng Xiaen's lectures. Zheng Xiaen did not dislike Kong Zhizhe. She looked at Kong Zhizhe's injured eyes and said that people in pain are not bad people, and she hoped that Kong Zhizhe could be reborn.

Episode 3

Zheng Xiaen was shocked when she saw the scene in front of her. She hurried to the public phone to call the police. Zheng Xiaen fainted because she was too excited. Kong Zhizhe immediately sent her to the hospital. . Zheng Xiaen was lying on the hospital bed and recognized Kong Zhizhe as Cha Hyungbin, and she held Kong Zhizhe's hand.

Episode 4

Cha Hengbin and Zheng Xiaen came to the hospital. Zheng Xiaen said that she would live strong and she agreed to Cha Hengbin's proposal. Zheng Xia En heard the nurse's conversation in the hospital bathroom. The nurse told her that it was not Cha Hyung Bin who came to the hospital carrying her that day, but Kong Ji Zhe.

Episode 5

In this life, Xia En is a forensic doctor named Zheng Sibin who specializes in bones. In this life, Cha Hyungbin is prosecutor Kim Soo Hyuk of the Seoul Central Inspectorate. Zheng Sibin saw gangsters kidnapping an old man outside in the bus.

Episode 6

Qian Jongbum rode his motorcycle back home. Qian Jongbum jumped up and down at the door before ringing the doorbell. While eating at the dining table, his mother asked him why he was sweating. He said that he ran back. His father told Qian Jongbum to go to the United States and never come back no matter what happened.

Episode 7

The three of them entered the building. Zheng Sibin thought he had seen Kim Soo Hyuk somewhere. Kim Soo Hyuk said that when you were kidnapped by gangsters, you were in Mapo. The two officially exchanged names. Jin Soo Hyuk entered the forensic room first. Zheng Sibin asked Qian Jongbeom to change into a white coat and said she was waiting in the forensic room.

Episode 8

Xiu Ha and Ren Dao visited the hotel. The aunt at the hotel said that she had a clear memory of the day Lin Huaying died. Because the woman behaved very differently, she remembered it very clearly. The aunt recalled that night. Lin Huaying said that because he cried a lot, he took me to the hospital. When he heard about biliary atresia, Zhong Fan's hands began to tremble again and asked Lin Huaying if he was dead? Lin Huaying said that she finally made him a nice-looking dress and said she would never meet a mother like me again.

Episode 9

Xiuhe and Sobin had a car accident on the way home. Xiuhe protected Sobin but was seriously injured. Xiuhe was sent to the hospital. The doctor said that there was no big obstacle, but Suobin was neither a family member nor a lover. The doctor was curious about Xiuhe's thoughts in protecting Suobin.

Episode 10

Xiuhe and his fiancée Shangya met Shangya’s mother, and Shangya’s mother asked Xiuhe to send Shangya to the concert hall. On the way, Sang Ya asked Xiu Ha if anything had happened to him recently. You would dive whenever you were stressed.

Episode 11

Jang Huimei is the author of "The Murderer's Secret" and was Kong Zhiche's defender at the time. Zhang Huimei participated in a talk show and said that she only wrote a novel based on the words on Kong Zhiche's wall. The Kong Zhiche in the novel did not die. Kong Zhiche was not mentally ill. She said that the person was the same as us in the beginning.

Episode 12

The next day Zhong Fan found Su Bin at school and said that taking medicine mixed with grapefruit after organ transplant surgery will cause serious heart problems. Zhong Fan gave Sa Bin a gift, which was the meteorite that the priest gave to Zhong Fan that day. Zhong Fan helped Su Bin bring it.

Episode 13

In 2000, when Soo-ha was a child, he wanted to be a prosecutor like his father. The father and son talked about the murder case. The murderer in that case was sentenced to four years in prison. In , the prosecutor at the time was Soo Ha's father. Four years later, the murderer was released and killed again.

Episode 14

After Sobin returned home, she began to read books about psychopathic genes. A good friend posted a blog saying that Sobin was not a normal person. Zhong Fan watched the news and received a call from his mother. Her mother said that she was going back to China tomorrow to attend a charity party. Zhong Fan said that she was going back.

Episode 15

Zhong Fan went out after reading the text message. He went to Zhang Huimei’s house. Zhong Fan was playing with the dog downstairs and Zhang Huimei was playing the piano upstairs. The two looked at each other through the window and came to the living room. Zhang Huimei mentioned resurrection, and Zhong Fan asked what would happen if he killed his beloved. Zhang Huimei replied that he didn't know and asked Zhong Fan.

Episode 16

Xiuhe sent Zheng Chenghe back to the hospital. Xiuhe drove Suobin home. In the car, Suobin asked Xiuhe why he came to the hospital. Looking for his father? Xiuhe didn't answer, so he asked Suobin to change to a nursing home. He also asked Suobin what martial arts he knew, and Suhe replied that he didn't.

Episode 17

After Zheng Sibin was injured, Kim Soo Hyuk immediately called an ambulance to take her to the hospital, and then Cheon Jong Beom rushed to the hospital. Because Zheng Sibin needed suture surgery, Kim Soo Hyuk signed the surgery consent form and wrote down the relationship between colleagues.

Episode 18

Baek Sang-ya was wearing yellow clothes and carrying a yellow umbrella and was about to go out. Qian Jong-beom followed her and left together. Detective Zhou saw an oil painting in the gallery, which was the same as Kong Zhizhe's painting thirty-two years ago. Detective Zhou sent a text message to Kim Soo Hyuk, but Kim Soo Hyuk did not reply to his message.

Episode 19

Qian Jongbeom saw Zheng Sibin and Kim Soo Hyuk kissing, and suddenly felt unwell, so he hurried home. Jin Soo Hyuk sent Zheng Si Bin home, and Jin Soo Hyuk told Zheng Si Bin that he had regretted his marriage.

Episode 20

When Zheng Sibin woke up, he found himself lying on Qian Jongbeom's bed. Then Qian Jongbeom fell asleep outside. Qian Jongbeom saw the watch on Zheng Sibin's wrist. , when Zheng Sibin was washing the dishes, Qian Jongbeom wanted to help Zheng Sibin take off his watch, but unexpectedly the watch fell into the water.

Episode 21

Zhong Fan was shot in the head and lay on the ground, Xiu Ha hugged Su Bin and left the school. Xu Taihe watched Xiuhe leave, walked into the school, took a photo of Zhongfan's injury, and took Zhongfan to the hospital for first aid.

Episode 22

Xiuhe discovered something fishy in the painting and called someone to seize the studio, saying that Jiang Douzhe was a criminal. The moment he got in the car, he spotted a figure in the rearview mirror. Xiuhe didn't pay much attention and drove home.

Episode 23

Xiu Ha was recalling the past with Xia En in the bookstore, thinking of the scene when Xia En fell from the ladder, and thinking of Xia En's words, her eyes hurt sharply. After a while, he thought of Zheng Suobin again, and the memories were intertwined. Xiuhe felt that there was a ring on his hand, saying that his agreement had not been fulfilled yet.

Episode 24

Xiuhe came to the National Institute of Science and Technology and met Zhongfan head-on. The two walked straight in front of each other. Xiuhe asked how you are still alive. , Zhong Fan said why I couldn’t come back, why did you shoot me.

Episode 25

Zhang Huimei looked at the painting and called Kong Renyu and said, teacher, do you believe in rebirth? Kong In-woo said: Why do you think that is Zhiche? Zhang Huimei said that the child's eyes were not his. The child clearly remembered what happened 30 years ago. He was very special to me.

Episode 26

The police took Bai Shangya away. Zhang Huimei asked Xiuhe if there was any conclusive evidence. Xiuhe said I wanted to ask you why you didn’t recognize the mentally ill if you knew so much about them. What about the people around me? Shang Ya was taken to the police station for interrogation. Xiu He took out the photos and asked Shang Ya about killing people. Do you admit it? You know that I hate animals the most.

Episode 27

Zhong Fan was walking on the road thinking that if I could be reborn, I would like to be Zheng Xia En’s heart and become her permanent memory.

Xia En broke away from Zhong Fan's kiss. Zhong Fan said that my heart hurt when I saw you for the first time.

Episode 28

Xiuhe sent Sabin back home. Saobin said that the street lights had been repaired and asked Xiuhe why he wanted to find my father today? Xiuhe said that actually I went there because of Kong Zhiche. My uncle was a prison guard at the time, and she was wondering if he would know something, and asked Sobin not to worry that he would handle it well.

Episode 29

Xia En woke up in the hospital bed and asked the priest if Heng Bin had not been found yet. The priest said that death is not the end, and you will meet when the time comes. Xia En asked the priest to find Heng Bin's body and fell asleep.

Episode 30

Zhong Beom went to Xiu Ha. Zhong Beom said that I can’t wait any longer. If you don’t act well, I will use Baek Sang Ah’s evidence to do it with Jang Huimei. trade. Xiuhe took out the photo and said that we will continue to look for it and we will be able to clear your name by then.

Episode 31

Xiu Ha submitted his resignation to Prosecutor Qian and wanted to restore everything. Prosecutor Qian asked Xiu Ha why he wanted to arrest Baek Sang Ah and Kong In Woo so much. Xiu Ha said that you also Knowing how many people they killed, Kong In-woo should think of it as atonement for the detective who turned Kong Ji-cheol into a serial murderer. Prosecutor Qian tore up Soo-ha's resignation letter and said that he would transfer Soo-ha to another city. Soo-ha asked Why do you want to kill me and cover up the Kong In-woo case? Is it simply because you were the prosecutor at the time or do you have other secrets?

Episode 32

Xia En was sent to the hospital. The doctor said that the situation could only be determined now. The patient had heart problems because he was overly sad. There was really no way but to perform cardiac surgery. Transplanted. After hearing this, Zhong Fan went to find Xiu Ha. Xiu Ha was drinking at home. Zhong Fan asked if it was because you broke up, so you could reconcile.