Tae-heon accidentally discovered that Jung-won was also on her way to Moon City, which piqued his curiosity and decided to follow her.However, this behavior is misunderstood by Jung-won as surveillance, and she sternly warns Tae-heon not to continue doing this.

Later, Zhengyuan learned about Jin Minzhe's existence from her colleagues.The next day, she visited Moon City High School, while Tae-heon visited the family of Kim Min-cheol's ex-husband, Kim Soo.At school, Zhengyuan carefully planned a fake surprise video to elicit more information.The vice-principal reveals Woo-jae's popularity at school, but little is known about his relationship with Yoo Yoon-young.At the same time, the vice principal also mentioned Woo-jae's hurried trip to the United States and Min-cheol's troublemaking behavior to Jung-won.

On the other hand, Minzhe released a statement online claiming to be the father of Eunchae's child.The vice-principal recalled that Minzhe threatened to harm himself because of the cold response of his crush Nali, and finally Woo-jae came forward to rescue Nali.Jung Won further confirmed that the third girl in the photo of Woo Jae and Yoon Young she saw before was Na Ri.However, a fire in the Bongtu factory in 2009 resulted in Na Ri's tragic death. This monument was funded and built by Woo Jae's father, Seol Pan Ho.

After returning home, Woo-jae learned about the necklace Jung-won left at the crime scene through a private detective and instructed him to further investigate Tae-heon.Meanwhile, detectives talk to Jin-soo's sister, who reveals that Min-cheol called her and insisted that Jin-soo was innocent.When the fire broke out at the Bongtu factory, Jin Xiu's sister asked Moo Hyung-taek for help, but he later regretted his promise.

Tae-heon then visits the vice-principal, while Jung-won goes to meet Jin-soo's sister.Both are trying to track each other down.Tae Heon begins to connect Yoo Yoon Young to the entire incident.Eventually, the two investigators meet, and Tae-heon asks Jung-won about Yoon-young.His distrust of her becomes increasingly apparent, even accusing her of going to Eun-chae's crime scene.Jung-won refuses to answer and leaves.

Looking back three years ago, Zhengyuan was accidentally pulled away by Taeheon when attending Cha Zhenyu's funeral.He wants her to be honest and tell him that her real motive for approaching him isn't just to spy on Jin-woo.However, his questioning revealed deep suspicion of Zhengyuan.

Finally, the two had dinner together.Despite the tension between them, Tae-heon pulls Jung-won to shelter from the rain when it suddenly starts raining on the way home.There, he admitted that it was painful for him to watch her go through so many difficulties.

After Tae-hyun got drunk, Jung-won had to help him back to the room.In his drunken state, Tae-heon asks Jung-won to help him trust her.At this time, Woo Jae called and overheard Tae Heon's voice.He simply asked Zhengyuan when she would be home the next day and hung up.

Yin Ying unexpectedly appeared when Woo Jae was drinking alone. She showed a photo of Zheng Yuan's sleeve stained with blood, implying that Eun Chae's death was related to Jung Won, which aroused Woo Jae's strong desire to protect his wife.Yin Ying then gave a bottle of propofol as a gift, but Woo Jae smashed it against the wall angrily.

Early the next morning, Zhengyuan insisted on driving Tae-heon off in person.In the restaurant, she tells Tae-heon about the entanglement between Yoon-young and Na-ri in detail.When they realize that the fire at the Fengtu factory may be the key to solving all the mysteries, the two decide to visit the police detective in charge of the case in search of new clues and evidence.

A damaged watch turned up in the case sparked new speculation.The watch, which had lost its battery, was similar to watches from two previous murders, and detectives revealed it had belonged to Li Nali.Tae-heon therefore brings up the metaphor of a clock, suggesting that there may be a common murderer behind these events.

On the way back, Taixian and Zhengyuan noticed signs of being followed, but ultimately failed to intercept the suspect vehicle.Shockingly, the driver was Mou Hengze's assistant, which made the case even more complicated.

At home, the relationship between Woo-jae and Jung-won is strained due to misunderstandings.Woo-jae is suspicious of Jung-won's whereabouts, and Jung-won is disappointed with Woo-jae's distrust.Meanwhile, Min-cheol's phone call provides new clues to Tae-heon, who reveals that she regularly sends money to victims of factory fires, hinting that she may be connected to the case.Woo-jae learned of Tae-heon's whereabouts through a private detective and began to doubt his identity.

The meeting between Xue Panhao and Mou Hengze revealed the transformation of the power relationship between the two.The former master-servant relationship has now been reversed, and Xue Panhao seems to intend to use Mou Hengze to achieve his own goals.This change heightened the tension of the plot and paved the way for subsequent developments.

Early in the morning, Woo-jae discovers Jung-won's secret in the office, further escalating the crisis of trust between the two.However, after a frank confrontation, the misunderstanding was resolved.At work, Lu Zhihao's invitation brought new opportunities to Zhengyuan's team, and the reconciliation between Aina and Zhengyuan also paved the way for teamwork.

Tae Heon's bribery investigation unexpectedly involves more inside stories.He discovered that it was the same police officer who was investigating him, and that the culprit behind the scenes was his boss.This discovery shocked Taexian, and he began to re-examine the people and things around him.

Zhengyuan met Mou Hengze by chance on the street, and their conversation revealed that a larger conspiracy was brewing secretly.Meanwhile, Tae-heon decides to meet Yoon-young, hoping to get more information about the case from her.