
Sung Jae's aura looks different from the last time he returned to Korea. They were on the same plane and their benches were next to each other.
"Do you want to go to Korea too?" yo Han asks who saw Sung Jae sitting next to her.
"Yes, I'm a Korean citizen" Sung Jae explained.
Their brief introductions get them to be close because they have the same hobbies.
Meanwhile at Ilsan police station they get a theft case that occurred in a luxury house. Luxury homes that are in the elite area and have tight security can be entered by thieves. Eun Ho and Man Ho are on the scene first and inspect the scene as well as the missing items. It turned out that the house belonged to Jong Hyun's parents and the missing diamond necklace belonged to Jong Hyun's stepmother. After interviewing the victim named Dong Mi, Eun Ho and Man Ho also left the house and at the same time Young Min came with Kyung Min.
"What's going on?" ask Young Min.
"Case theft. A diamond necklace stolen from this house is currently forensically gathering evidence" Eun Ho explained.
"But why is our team in contact? Isn't this not our area?" ask the confused Young Min.
"That's because our team is the only one that doesn't have a case so the team that should be here goes somewhere else and gives this case to us" obviously Man Ho is a little upset by the fact that they have often been treated like this since they failed to catch the serial killer.
"About? Does the captain know?" ask Young Min.
"I think he already knows the proof he's here" Man Ho said as he looked at Jang Man who had just arrived.
"Hows it? Is there any evidence?" ask Jang Man who just came.
"Captain are you serious?" asked Man Ho who was astonished to see the calmness inside Jang Man.
"What do you mean?" ask Jang Man.
"It's okay captain" retorted Young Min who stopped Man Ho from speaking again.
Young Min invites Man Ho to go inside and see where his heist is followed by Kyung Min. As he walked inside, Young Min saw a large family photo and she recognized one of the people in the photo. Kyung Min also recognizes the person and instantly her bad memories come back and the memories of Yo Han also come back.
"Are you not pa-pa?" young Min asks Kyung Min.
"Yes, I'm not pa-pa" Kyung Min replied lying.
"Are you sure?" young Min asked again because he was worried.
"Yes" Kyung Min replied.
After passing through the living room they got to the living room where Dong Mi sat with a sad face due to her diamond loss. As soon as he saw Young Min, Man Ho and Kyung Min entering, Dong Mi immediately ran towards them.
"Please find my diamond" Dong Mi pleaded with them.
"Well you calm down first" said Young Min who tried to calm Dong Mi down.
"How can I calm down if my most precious diamond just disappears" explained Dong Mi who felt frustrated and sad.
"We will try our best but due to the lack of evidence the investigation process will be a little difficult" explained Young Min after hearing an explanation from Eun Ho when he had just arrived.
"I will pay you whatever you want so please find my diamond" Dong Mi pleaded again and did not care about Young Min's words.
After Dong Mi sat down, they were only able to work and look around the scene. When he saw the safe where the diamond was stored, Young Min felt strange because of how the thief knew with the password of the safe.
"How does the thief know the password of this safe? Isn't this weird?" young Min asked Jang Man.
"yes too. Even he went straight to this room because everything looked neat. It was as if he already knew where the diamond was stored" Jang Man explained.
Young Min approached Dong Mi to ask a few questions, Dong Mi who saw Young Min coming towards her made her stand up straight away.
"How did you catch the culprit?" ask Dong Min.
"Yet. But I wanted to ask you something, did you tell someone else your safe password?" ask Young Min.
"No. Only me and my husband know because my husband often goes out of the country for business so only I know at this time" explained Dong Mi.
"Can I check the CCTV camera?" ask Young Min again.
"I told you that the CCTV here died during the theft so there was nothing to see" Dong Mi replied.
"Not CCTV today but CCTV for the past few weeks" Young Min replied.
"How many weeks? What is it? " ask Dong Mi who looks nervous.
"Because it could be the person who entered here or someone who accidentally saw you put the diamond in the safe" Young Min replied.
"I don't think it's necessary because no one has entered this house since my husband left" Dong Mi said as if she was hiding something.
"But we still have to see the CCTV if you really want to catch the culprit and we should check your CCTV thoroughly. I beg you to cooperate" Young Min replied.
Dong Mi who had no other choice was forced to provide CCTV footage of her house to Young Min for her to check. Young Min and Kyung Min go into Young Min's car to observe the CCTV footage and they find a man who often goes in and out of this house.
"Didn't this guy go to this house too often?" young Min asks Kyung Min.
"True, I also feel so and also he always comes on Mondays, Thursdays, and Saturdays. Three times a week at the same hour and always out at the same time. And he also looked at the camera several times like he was studying the location of the camera" explained Kyung Min after making observations when he saw the video.
"Wow, your new kid is pretty meticulous too. Maintain your meticulousness" Young Min explained in praise of Kyung Min.
Hearing Young Min's praise makes Kyung Min feel proud and happy.
"You asked the owner of the diamond about this man" Young Min ordered as the first assignment from Kyung Min.
Arriving inside Kyung Min asks Dong Mi about the man they found in the video. Kyung Min even shows the video but Dong Mi pretends not to recognize the man.
"Are you sure you don't know this guy? He enters this house 3 times a week at the same time and also exits at the same time. There's no way you don't know this guy because he comes to this house too often" Kyung Min explained.
"So do you suspect me? How can a policeman do this to his victims" said Dong Mi who was suddenly angry for no reason.
Dong Mi's angry attitude suddenly made Kyungin suspicious of Dong Mi. Suspicious Dong Mi was hiding something from them.