While Cha Yeon ho is writhing in pain on the ground, he sees a scene of a woman who has suffered an accident and is been wheeled into an ambulance. The scene leaves him in a bedraggled state. He then opens his eyes to see Jung hokyu assaulting him after discovering he’s an insurance investigator.
Thankfully, So hee and her team arrives in time to save him. Jung hokyu is arrested and interrogated but he denies ever trying to kill Jo soktae, lying that he had only wanted to complain that there was a fault with his car. However, Jung hyuk points out that he knows that they illegally tapped his car.
The team is left with no leads. Captain Jung has to offer his apologies to his superior Chief Gu for causing a scene. Chief Gu especially doesn’t like him because he had imprisoned his son for drunk driving instead of looking the other way.
Meanwhile, So hee and Hyung Kyung question the man who bought Jun hyuk’s car and the woman he bought petrol from. They all had the same thing in common. Jung hokyu used their phone to call someone and deleted the person’s number afterwards.
This leads the team to realise that Jung Hyuk has an accomplice. Meanwhile, Yeon ho gets pressured by his director Ms Park to put a halt on his investigation. While TCI members are in a meeting, Soo hee gets a call from Yeon ho telling her about his suspicions of his boss, Ms park because she overlooked Jung Hokyu’s insurance crime. He wants to tell So hee something else but decides against it until he was done with his investigation.
Yeon ho meets one of the victims family Song Jinman and accuses him of working with Jung hokyu who is his friend to kill his mom because of her life insurance. Then sharing the money with Ms Park in order to keep his secret. When he threatens to call the police on him, Son Jin man hits his phone.
His guilt is apparent and he confesses he did so in order to get money to set up his car business. But to shut Yeon ho up, he decides to burn his shop with Yeon ho in it. That way, he could get rid of Yeon ho and at the same time have insurance money. He pours gasoline all over the shop but when he tries to light the place up, Yeon ho tries to stop him. However, in the process, Song jin man ends up lighting not only himself but his shop. So hee and her team arrive in time to keep him from totally getting burned.
Yeon ho is safe and gives So hee a pen drive which recorded everything Son Jin man had said. With this, Jin man, Jung Hyukyu and Ms Park are done for and the law deals with them.
Meanwhile, Yeon ho pays a visit to the memorial place for a certain woman, Lee Hyunsoo, the one he saw in the mirage. He ends up speaking privately with her father in a park. He tells Yeon ho to move on since his daughter has been been dead for ten years. Yeon ho replies that he plans to change his job to one which Hyun Soo’s father used to do.
One year later, the team coincidentally meet Yeon ho at their usual restaurant but it isn’t really a coincidence because Captain Jung had wanted to gather them so he could announce that Yeon ho is their new team member.
The rest are in awe because of his high resume. However, So hee is against it and privately talks to Captain Jung, insisting that Yeon ho is not fit for a social occupation because he’s a loner. However, Captain Jung has made up his mind.
Things don’t go smoothly because it’s barely his first day and yet, Yeon ho’s bicycle has already collided with Chief Gu’s car. Although Chief Gu is at fault, he intimidates the TCI team. It’s only Yeon who stands up to him.
The team begin their usual work, encountering a drunk man who had a car accident under a tunnel. The man insists it was because he was trying to avoid a ghost but no one believes him. So hee notices Yeon ho looking around and wonders what he is up to.
Meanwhile, after digging into Yeon ho’s background, Chief Gu is shocked to discover from a friend that Yeon ho is actually the son of the Director of Investigation who would soon become the Commissioner general of police. He is confused about what to do given that he dislikes the TCI after they imprisoned his son for drunk driving. Due to this, he has been giving them a hard time. His friend advices him to get in their good graces in order to win favor from Yeon ho’s father.
So he joins them for dinner and is good to them, well particularly Yeon ho even though Yeon ho is less than receptive, refusing his drink because he lacks the enzymes to break it down. (Haha) Before then, the team had agreed to tell Chief Gu to remove his parking spot so that others can be free to park there. However, they can’t bring themselves to do that due to fear.
Yeon ho decides to ride back with So hee and detective Won but on their way, a woman in a white dress appears from nowhere. Trying not to hit her, they bash into a trash can. Thankfully, they don’t sustain any injuries but they are shocked that the accident took place at the tunnel where the drunk man had said he saw a ghost because the white dressed woman is nowhere to be seen.
The epilogue shows captain Jung meeting late Lee Hyunsoo’s father after Cha Yeon ho left. He seems a little annoyed at him for forgiving Yeon ho easily for something he had done and gets surprised when Hyun soo’s father tells him that Yeon ho wants to be a police man. He seems hesitant to accept him but Lee Young Soo’s father says it’s his choice and that the reason for Yeon ho joining the TCI is because there’s something he has to do.