Catch the Ghost

Comedy, Detective, Love

Yoo-Ryung is a rookie detective. Her twin sister with autism has gone missing. To find her sister, Yoo-Ryung applies a position in the subway police team. Ko Ji-Seok was impressed with Yoo-Ryung’s memories for knowing the in and out of the subway. He accepted her application and allowed her to join the team. Yoo-Ryung has exceptional space perception. She solves cases using her exceptional space perception and strong sense of justice. She never follows rules and regulations. Her partner detective, Ko Ji-Seok is often busy cleaning up behind her. Ko Ji-Seok has been influenced by her justice spirit. He also supported her to catch the culprit even though it is not under his scope.

Ko Ji-Seok has a mother who was sick at the mental illness hospital. He came to visit her from time to time. Ha Ma-Ri and Kim Woo-Hyeok were Ko Ji-Seok’s colleague. They were assigned to investigate the murder serial case in the subway. They found out that Yoo-Ryung worked at the subway police team just to find her missing sister.  She once told them that the answer for the culprit was in the tunnel. They started to investigate the misery tunnel by going through all the previous case files.

Ko Ji-Seok faced financial issues. He was unable to repay the medical expenses for his mother. When he faced a pay cut as a punishment from the top management for not saving the life of the people, he was helpless.

One day, there was a man who lost his money in subway. He asked Ko Ji-Seok and Yoo-Ryung to find the money for him. One kind man returned the money to them. When Yoo-Ryung tried to contact the man, she was unable to reach him. She called his house number and his wife told them that he was missing. Missing man is not in their job scope. Ko Ji-Seok refused to help the wife but Yoo-Ryung insisted to help the wife to find his husband. The man was actually borrowed a loan from the loan shark, Goodbye Cash. Yoo-Ryung went through his handphone number and found out about it. The loan shark threatened him to repay the money or else they will look for his wife and child.

Ko Ji-Seok has no choice but to figure out the way to pay for the medical expense. He went to the Goodbye Cash and tried to borrow some money. However, he was nervous when Yoo-Ryung came to the place. He hides himself in the cupboard. When Yoo-Ryung was being attacked by the loan shark, she was locked up in the same cupboard as Ko Ji-Seok. They escaped from the cupboard when the someone opened the cupboard. Yoo-Ryung found a will written by the man on the table to take care of his wife and child. Ko Ji-Seok and Yoo-Ryung saved the man from jumping off the bridge. They also managed to catch the criminal who committed their crime for charging high interest for the loan and also instructed the man to kill someone.

Yoo-Ryung again decided to rescue a woman who has been bullied by her fiancé, Kim Won Tae. Her fiancé was a great boxer who was also the ambassador of the Subway police. Yoo-Ryung caught him at his house for hitting his fiancé. Ko Ji-Seok and his colleagues interrogated him and asked his fiancé to file a report against him. Yoo-Ryung tried to convince her, but she decided to forgive him once again.

Ha Ma-Ri and Kim Woo-Hyeok were working together on the murder case in the subway. Ma Ri was Ko Ji-Seok’s ex-girlfriend. They used to be a great partner who solved many cases. They promised each other to earn promotion and worked in the same department. Due to Ko Ji-Seok’s mother illness, Ko Ji-Seok decided to work as subway police in order to have more time to take care of his mother. He never told Ma-Ri the reason why they broke up.

Yoo-Ryung’s colleagues found out that Kim Won Tae murdered his ex-girlfriend before. Yoo-Ryung showed her the file and the missing evidence of wallet and the ring. She informed her that he would beat her again.  The woman did not believe that. She insisted to trust him. After they went back home, the woman tried to find the ring that it fell under the cupboard. Won Tae took it away and hide it while the woman went out to do some grocery. Yoo-Ryung wanted to go to their house, but Ko Ji-Seok warned her not to bother them. Yoo-Ryung stopped in front of their house and called her over the phone. She promised her that she will help her free herself from being controlled by Won Tae. While Yoo-Ryung was on her way back to the office in the subway, she has been attacked by Won Tae.

Ko Ji-Seok and other colleagues searched for her all over the subway. Ko Ji-Seok found her bleeding on her head. He brought her to the hospital at once. He went to see Kim Won Tae and fight with him. He also rescued the woman out from the house. Kim Won Tae was captured by the police to the police station. The woman got treatment at the hospital as well. She gave Yoo-Ryung the evidence as well as a pen drive where her partner fought with Kim Won Tae. She was surprised and touched. Ko Ji-Seok lied to her when she asked him about his condition on his face.

Ko Ji-Seok gave her a baton for safety purpose. When their colleagues gone through the CCTV footage, they found out that there was another man who followed Yoo-Ryung other than Kim Won Tae. Before Yoo-Ryung passed out, she also saw a black shirt man tried to attack her after Kim Won Tae left. Yoo-Ryung continued to go to the tunnel to find the murderer. She found out that there was a place where the blueprint did not state. She was curious where did the tunnel heading to.

One of the colleagues shared a video regarding the misery case that woman named Avocado who was missing after attending the party. Yoo-Ryung started to get more interested on the case. Ko Ji-Seok stopped her from getting any trouble as their department was going to evaluate by the top management. Ko Ji-Seok partnered by Yoo-Ryung managed to catch most of the perverts. However, the other team was unsatisfied due to they across their stakeout place. Both of them were transferred to another station to stakeout. Yoo-Ryung asked Ko Ji-Seok the reason why he worked as subway police rather than working with Ma-Ri. He did not answer her. Ha Ma-Ri and Kim Woo-Hyeok were assigned to investigate the case of missing Avocado.

While Yoo-Ryung and Ko Ji-Seok were on the way back after the party, Ko Ji-Seok saw a petty thief who stole a wallet from a woman. He followed him and yet he got attacked by the thief. He missed the thief. Ji Seok called Yoo-Ryung who was sleeping in the subway to bring the woman out in the next station and make a report about missing wallet. They later found out that many women lost their wallet after the party in the first subway. Yoo-Ryung and Ko Ji-Seok believed that it was done by the petty thief. They started to investigate the case by visiting the woman. One thing in common was most of the woman who lived alone did not go home. Ji Seok talked to Ma Ri about it. While Ma Ri and her team was investigating the Avocado case, Ji Seok realised the man in the footage was the petty thief.

Yoo Ryung wanted to enter the tunnel again during midnight. Suddenly, her office blackout. She heard someone was coming to her office. She was afraid of it. When she opened the door, there was a hand tried to grip her neck. Luckily, Ji Seok came in on time. Yoo Ryung was scared and cry. Ji Seok thought that she was afraid of dark. The next morning, she told him that she did not want to be his partner anymore. Ji Seok was furious because he could not understand why she changed her mind so quickly. Both of them made a visit to Ma-Ri and Kim Woo-Hyeok office. Yoo Ryung told Woo-Hyeok about the man who tried to kill her. She also told him the reason why she did not want to be partner with Ji Seok was she did not want him to get hurt. Ma-Ri’s mother wanted both teams to work together in order to resolve the case. Ji Seok was jealous when Woo-Hyeok suggested that they should change partner. All of them work together to catch the rapist. Yoo Ryung managed to convince Avocado to face her problem and allowed her to help them to catch the rapist. Avocado took her courage to confess in the Youtube video. The other victim who viewed her video also changed their mind and made a police report towards the man. Finally, they managed to find out where he worked and also able to catch him and handed him to the police.

Ma Ri found out the reason why Ji Seok dumped her. She realised that he has a sick mother to take care of. She tried to fix their relationship. Yoo Ryung was jealous when Ji Seok met his ex-girlfriend. She met up with her friend, a nurse who take care of Ji Seok’s mother. The nurse asked her to apology to Ji Seok that she should not hurt his feeling about sudden change of partner. She called him and left a voicemail for him. She accidentally told him about her secret. She quickly went to the restaurant to take Ji Seok’s phone in order to delete the voicemail. Unfortunately, there was a password locked on it. Ji Seok always received a voicemail notification and he found it strange.

Ji Seok changed the schedule and let Yoo Ryung worked with Chief Kong. Chief Kang was exhausted and wanted to escape from her. Ji Seok and the other colleagues worked on Grasshopper case.  Ji Seok sold his house in order to pay debt for his mother medical expenses.

Yoo Ryung told the Detective Kim about the closed tunnel that not in the blue print. Detective Kim found out that the project has been abandoned and therefore the tunnel was closed. They tried to enter the secret tunnel as they believed that the culprit was there. They found another door closed at the end of the tunnel. They tried to open but they failed.

There was a bakery shop ran by a father and a son. The son was an autism patient. He scolded his son for not doing thing right. It reminded Yoo Ryung about her sister who also an autism patient. One day, the son was missing while he was away from his shop. The father looked for his son everywhere. Yoo Ryung came to help him find his son.

On the same day, the Grasshopper also pick pocket many passenger’s wallet. Ji Seok and Yoo Ryung tried to catch the Grasshopper while other colleague interview and wrote report for all the affected passenger. One of the passengers took a video during a live band held in the subway. Yoo Ryung believed that her handphone has captured the evident of kidnapper who took away the baker’s son. She decided to help Ji Seok to catch the Grasshopper. Unfortunately, the Grasshopper threw his bag in the trash car. Yoo Ryung abandoned Ji Seok and went to the trash area to find the handphone. They lost the Grasshopper.

Yoo Ryung was about to lose hope when she can’t find the bag. Ji Seok was shocked when Yoo Ryung cried and apologies for her wrongdoings. He helped her to find the bag. They managed to find out the culprit and caught her in the subway. Ji Seok’s penalty has been lifted up at the moment even though he failed his mission to catch the Grasshopper due to his contribution to rescue the son.

When Yoo Ryung visited her friend at the mental hospital, she was surprised to see Ji Seok there. She realized that she was wronged for Ji Seok who struggle to pay his mother debt. One of the cleaner, Choi Kyung-Hee offered to take care of Ji Seok’s mother as she found out that Ji Seok was the police at the subway. Kyung-Hee has a son who was involved in the series murder in subway.

Ji Seok overheard the conversation between Yoo Ryung and Kim Woo-Hyeok that they will meet each other at night. Yoo Ryung and Kim Woo-Hyeok entered the secret tunnel and found out the missing wallet as well as the victim belongs. All the victim belongings were there except for Yoo Ryung’s sister. It only has her photo taken. Yoo Ryung decided to let Kim Woo-Hyeok handled the case. While they returned to the subway, Ji Seok was angry that Yoo Ryung entered the tunnel without his permission. Ma Ri also angry with Kim Woo-Hyeok for secretly investigate the murder serial tunnel case behind her back. However, Ma Ri and Kim Woo-Hyeok took over the case. She also asked Yoo Ryung to join her team. Ji Seok did not understand why she did not tell him anything about it. Yoo Ryung was being bullied by Ma Ri’s teammates for abandoning her sister during the day her sister was missing. Ji Seok was suspended for 3 months for not taking care of his subordinate. During the meeting, Yoo Ryung realised that one of Grasshopper was related to the true murder serial tunnel. They gave posters to the people around the subway station to assist in investigation. The Grasshoppers suspected one another was the murder for the murder serial tunnel case. They started not to believe anyone of them.

When Ji Seok visited her mother, the nurse told him about Yoo Ryung’s story. He understood her situation and feelings. He also curious about the cleaner who acted differently when his mother told the cleaner to visit her son in the hospital. He went to the Ma Ri’s office to find her. He argued with Ma Ri for being cruel towards Yoo Ryung. Ji Seok and Yoo Ryung became closer to one another. They had a drink together. Ji Seok found her room was full of investigation on subway case. Grasshoppers decided to split ways in order not to get caught by the police. They wanted to runaway from Seoul. One of the Grasshopper member was being recognised by the shop owner. She called the police to go after him. Ji Seok was having a meal with the Madam Commissioner. He mistakenly took Yoo Ryung’s handphone. He received the call and informed Kim Woo-Hyeok about it. He also got permission from the Madam Commissioner to allow him to catch the Grasshopper even though he was suspended. All of them work together as a pair to catch the Grasshopper. They barely managed to catch them as they lose them in the end.

One of the Grasshopper member called the police when he decided to leave alone rather than with his teammates. The police came to the jetty to catch them. They managed to catch 2 of them and lost 1 member. Ma Ri interrogated them to reveal their partner. They provided her the name and age. However, the police found out that it was fake name. He fabricated his identity.

Due to the news about the Grasshopper case was investigated by Metro police, the journalists published the news in the newspapers. Madam Commissioner was angry as they have not identified whether the Grasshopper case and murder serial tunnel case was related. After gathering the DNA of the Captain Grasshopper, Yi Joon, they found out that the DNA was the same as in the secret tunnel. Thus, the confirmed the identity of the murder.

Madam Commissioner was being threatened by one of the police who would like to report her for allowing Ji Seok to carry the duty as police even though he was suspended. The police committee decided to send Ji Seok far away to an island. He left only week in Seoul. Ji Seok was worried about Yoo Ryung. He stayed outside her house every night. One day, he realised that a man was watching at her house. He chased the man but failed to catch him. He collected all the cigarette butt to test for DNA. He informed Woo-Hyeok and Ma Ri about. Woo-Hyeok decided to stake out at Yoo Ryung house. He also told Yoo Ryung the truth and also Ji Seok’s condition. She was surprised about it. The next day, she went to the Madam Commissioner’s office to make a deal with her. She promised her that she will catch the Grasshopper in a week, and in return Ji Seok will assigned back to his subway police position. She told Ji Seok the good news. Ji Seok hugged her and asked her to be his girlfriend. She hesitated because she wanted to focus on catching the murderer.

Yoo Ryung and Ji Seok interviewed a few people to find the person who giving out fake identity to the people. They caught the woman and asked her about their meeting venue and time. Yoo Ryung and Ji Seok went to the subway to find him. they managed to catch him. When Yoo Ryung asked about her sister, he told her that she was alive.

She was relieved that she was alive. Yi Joon was taken by the Ma Ri and Woo-Hyeok for further investigation. He didn’t seem to be the murder because he did not have the tic on his shoulder. Besides that, he has an alibi that proof that he wasn’t the murder. The cops started to confuse who the real murderer was. After interrogating 3 of them, they came to the conclusion that the murder was in the mental health hospital. It was the hospital that Ji Seok’s mom stayed at.

Ji Seok called the caretaker to protect his mother and don’t leave the room. The caretaker ran out of the hospital and released the man. Ji Seok’s mother followed the caretaker and saw the whole evidence. The caretaker released the patient out from his room. The caretaker hided the patient in order to protect him from being killed by her son. However, Yi Joon escaped from the jail, and managed to find the patient. He killed him in front of his mother. Ji Seok’s mother also witnessed the whole incident.

Ji Seok and his team realized that the caretaker was the mother of Yi Joon. She escaped from the hospital. Yi Joon also escaped from the hospital with the help of his partners. However, the subway cop recognized them. They chased them and caught them. However, Yi Joon managed to flee himself from the truck.  Ji Seok and Yoo Ryung found the restricted area at the basement. They found the blood on the floor. Yi Joon also left a CCTV footage for her. The CCTV footage showed that the passerby pretended to ignore to save Yi Joon’s daughter. The patient pushed Yoo Jin and she accidentally pushed his daughter when the subway door open. Yi Joon on the other end witnessed the whole situation. He therefore killed all the people who was associates with the case. Yoo Ryung was shocked to know the truth.

The caretaker brought Yoo Jin to Sunil Motel. She requested Yoo Ryung’s friend to hide her so that Yi Joon can’t find her. Ji Seok’s mother overheard the conversation. She told Ji Seok about it before her dementia came back again. She tried her best to recognize her son and protect the one he loved.  Yoo Ryung and Ji Seok went to the motel to look for the caretaker. Yoo Ryung found her and asked her the whereabout of her sister. When she was about to tell her, Yi Joon appeared. He attacked Yoo Ryung but being stopped by his mother. When Ji Seok came by, Yi Joon and Yoo Ryung hided at the corner. The caretaker jumped off the building in front of Ji Seok. Ji Seok failed to save her. He noticed Yi Joon and Yoo Ryung. He chased him and shoot him when he tried to hurt Yoo Jin. Yoo Jin ran far away. Yoo Ryung chased her sister but lost her at sight.

Everyone now looked for Yoo Jin who was missing. When Ji Seok posted up the poster for missing people, he found Yoo Jin. He talked to her and asked her to go back home. She went back home. Yoo Ryung apologized to her for her mistake for abandoning her.

Ji Seok asked Yoo Ryung again whether she agreed to go out with him, and she said yes. The subway police no longer ignored cases that involving major crime at the subway. They decided to help as much people as possible and catch those bad guys together. They always have argument with major crime team who also worked on the same case.