Turns out Yeon ho already has another article like that one with him. He then recalls how he had left home in 2014 after bidding his parents goodbye. He had just graduated and was going to travel abroad for further studies. He was driving to his hostel to pack his things when he got distracted trying to play music. He didn’t see the couple heading towards him and while trying to avoid them, he crashed into a truck but the couple still ended up getting hit.
Due to this, he became a suspect in their murder. His parents suffered humiliation while trying to plead for forgiveness in Lee Young Soo’s burial leaving Yeon ho feeling extremely guilty. Three high school students came up to testify against him. Captain Jung who was in charge of the case at the time feels something is suspicious about the accident.
In the next scene, a man and a woman are in a car when the woman suddenly jumps out of the car on the highway and collapses on the road.
Chief Gu has returned to bullying TCI team members again especially Yeon ho. He even tries to get back his parking space. Meanwhile, the team have been given a new case. It involves the woman who jumped out of the car. Her name is Kim minju and the young man with her in the car is Yang Jae young. She is now in a coma after the incident. So hee and Yeon ho visit her in the hospital and also end up talking to her mother who described her as the bread winner of the family. But she adds that Yang Jae young is the son of her daughter’s boss. He is a womanizer despite been married. He seemed to be harassing her daughter Kim Minju.
Hyung kyung and Dong gi question Yang Jae Young at the station and he is very confident in his innocence describing Kim minju as being paranoid. He even gives them his car’s CCTV footage without flinching. He is escorted out but meets So hee and Yeon ho. However, Yeon ho immediately recognises him as one of the high school students who stood as witnesses against him fourteen years ago. Yang Jae young seems to recognise him as well but brushes it aside, saying he must be mistaken. He drives off. However, the others think something is odd. They ask Yeon ho if he knows Yang Jae young but he quickly denies it.
Meanwhile at a fight club, Yang Jae young speaks with his friend Jung wook, one of the three witnesses to help him with his case but Jung wook seems hesitant. Yang Jae young then tells him about Yeon ho, surprised that a murderer like him became a police officer. However, they are worried because they also recieved the news article about the accident. They suspect this is the work another of their old friend Kyungsoo, the last witness who is trying to blackmail them for money. Hearing this seems to bother Jungwook specifically. (These two have something to do with the accident)
The TCI team are still investigating abc soon discover that Yang Jae young was driving his father’s company car instead of his personal car during the incident. Coincidentally, Kim minju regains consciousness and reveals the truth of what happened. She tells them she tried to escape because Yang Jae young sexually assaulted her.
Due to this, they question Yang Jae young at a cafe and he gets annoyed, threatening to sue Kim minju for slandering him.
Meanwhile his friend Jungwook with his father, assistant commissioner Myung hak have a meeting with Yang Jae Young’s father Chairman Yang. After discussing a bit, Chairman Yang leaves for the restroom. While he is away, Myung hak reminds his son Jung wook that Chairman Yang is no longer the thug he once was who used to clean up their messes. He advises him to work diligently with him so that he can earn a building worth hundred billion won. Jung wook then tells his father about Cha Yeon ho working with the TCI and his father looks visibly bothered.
One morning, Yeon ho arrives at the police station in his bicycle but meets So hee who is about to leave in her car. Together, the two go to see Kim minju in the hospital but are surprised to find Yang Jae young and his lawyer with her. The lawyer tells them that Kim minju will drop the charges against Yang Jae young. They leave with so much confidence and when So hee asks if she is serious about it, Kim minju cries, pleading with them to leave her alone and that she just wanted to forget everything. Her mother arrives and also begs them to leave after seeing Min ju’s state.
So hee and Yeon ho depart, feeling devastated but Yeon ho seems to have a plan. Meanwhile, Kim Minju’s mother notices her daughter’s phone recording something. She listens to the recording and discovers it’s Yang Jae young ridiculing her. He even insults her parents and threatens her. Kim Minju’s mother cries after hearing this.
Yang Jae young comes home to discover that his father’s company cars have been siezed by the Tax office. His father is so angry and nearly hits him because of this.if not for his body guards who restrain him.
Yang Jae young discovers Yeon ho sent the report against him. He tells Jung wook that he would get back at him for doing that.
Yeon ho meets with Lee Hyunsoo’s father. He too has recieved the news article page and Yeon ho asks if he has any idea who must have done it. The man replies it could be anyone who can’t forget the incident like his wife.
The next day while in her father’s taxi, So hee encounters her team running after a man on a scooter who has just hit a young child. She joins them in chasing after the man. Yeon ho mistakenly runs into the man on his bike but unaware he’s being chased, he lets him go. So hee uses his bike to chase after the scooter man and eventually catches him but later subjects Yeon ho to a brutal taekwando training for being weak.
While leaving, Hyun kyung meets So hee chastising her for nearly killing Yeon ho with her training to which she responds that if he is not fit for police training, he should quit. As they are talking, So hee notices a familiar man walk into the main police building with his entourage. Hyun kyung tells her that they are the new joint investigation unit which would be handling a robbery and rape case that has suddenly come up.
Just then, the team are informed of the case of a drunk man Jung Geun Soo who was found dead on the street. It seems to be a hit and run accident and after questioning some people, it’s discovered that the man was the neighborhood drunk and was a nuisance to everyone.
Eventually, So hee and Yeon ho question a home owner who said the last time she saw Jung Geun Soo, he was picking a fight with a strange looking man. Although, she didn’t have a good look at his face, the man gave off an unpleasant vibe.
Meanwhile, Hyun kyung uses her charm to get information from the forensic investigator. That’s how the team discover that Jung Geun Soo was hit by two different cars, one of them was a taxi and the other a normal vehicle. They decide to focus on finding the taxi first using the smart company, a company that manages public transport gps.
That night, assistant commissioner Myung hak pays a visit to the police station. So hee and Yeon ho are passing by when he regards them. So hee seems unable to look at the familiar man from earlier who is standing beside Myung hak. Meanwhile, Yeon ho recognizes Myung hak as the superintendent back in 2014 who had told him during questioning to admit to his crime of killing the couple. That way he would help him.
Now, Myung hak stretches his arm out to shake him but Yeon ho looks unwilling whereas, captain Jung watches the scene from afar.