Dr. Na Yi Je is a kind person with excellent skills. He works at the emergency medical station of Taegang Hospital. He always goes by the rules, and it makes him a bane for his seniors. Lee Jae Hwan, the second son of Taegang Group, causes a traffic accident by reckless driving.

A Traffic accident is caused by Jae Hwan, and many emergency patients are transferred to Taegang Hospital. Yi Je goes into surgery of a pregnant woman. However, Jae Hwan makes a scene, and it leads to the death of the patient. Yi Je is accused of malpractice and loses his position.

A car crash occurs, and Jae Hwan is secretly moved to a hospital with a serious injury. Min Sik comes to know that Yi Je is the only person who can save Jae Hwan, but he still disapproves the surgery. Meanwhile, Yi Je threatens Jae Hwan saying that he only has a few more minutes to live since he did the least job to keep him alive from the injury.

Yi Je performs the surgery on Jae Hwan. Min Sik tries to stop him, but Jae Jun appears and tells him that he approved the surgery. Yi Je asks Jae Jun to let him be the successor of Min Sik. Two weeks later, Yi Je gets appointed as the next medical director of the penitentiary.

Min Sik visits the prison to see Sang Chun. Min Sik forces Sang Chun to tell the truth, but he refuses. Min Sik poses a threat to Sang Chun, and Sang Chun gets into an urgent situation. Meanwhile, So Geum thinks Min Sik is suspicious, and she calls Yi Je for help.

Min Sik and Yi Je talk about negotiation for mutual cooperation, but Min Sik gets Yi Ra’s urgent call. Min Sik chooses to go to see Yi Ra, and he makes a deal with her. After seeing her, Min Sik encounters Jae Jun. Jae Jun notices that Min Sik is on Yi Ra’s side, and he plans to dig his back.

Getting betrayed by Yi Ra, Min Sik is being driven into a corner getting his family in a risk. Yi Je tells So Geum that he knows about Bit. Yi Ra and Jae In find out that Yi Je is after Min Sik. Yi Je asks Sang Chun about the list, and Min Sik searches the penitentiary.

Yi Je suggests Min Sik to retire without making problems. But Min Sik is certain that the document is not a real one and provokes Yi Je. Hyun Sang tells Min Sik where the list was sent by Sang Chun. Yi Ra calls Yi Je and tells him to bring Jae Hwan. Min Sik finds out that Yi Je is after him because of the false diagnosis three years ago.

Yi Je falls into Min Sik’s trap and faces danger. To get away from the situation, Yi Je makes a suggestion to Sang Chun. Meanwhile, Min Sik is watching them through the camera. So Geum visits Yi Je and asks him about Han Bit. Meanwhile, Seok Woo is being transferred to Western Seoul Penitentiary.

Yi Je promises Seok Woo to get a suspension of execution of detention. Sang Chun sends an email to Yi Je, and Yi Je sends the file related to So Geum. Jae Jun and So Geum meet to have a psychological consultation. Meanwhile, Jae In visits Jae Hwan, and she gets to know that Yi Je is trying to make Seok Woo have a suspension of execution of detention.

Seok Woo goes to Taekang Hospital to examine his disease. So Geum gets shocked that an arrogant psychopath Seok Woo’s body was deteriorated in a short time. Eui Sik visits Jung Hee to find out the link between Jung Hee and Yi Je. Meanwhile, Min Sik is confident that Yi Je’s plan will be failed.

So Geum thinks Yi Je is using her to make Seok Woo have a suspension of execution of detention. So Geum goes to Yi Je and asks him the reason he helps Seok Woo. Min Jung hears that So Geum is helping to let Seok Woo go. Meanwhile, Seok Woo thinks that he couldn’t get a stay of execution because of So Geum.

Yi Je tells So Geum that they shouldn’t cooperate anymore. Yi Ra says to Chairman Kim that the reason Seok Woo’s detention couldn’t get suspended is Min Sik. Meanwhile, Min Sik meets Jae Jun to persuade him to discard Yi Je. Yi Je and Sang Chun go to see Jung Hee and ask her to be on the same boat.

Eui Sik takes away Yi Je and Jung Hee to his office, and he asks Yi Je the reason he visited Jung Hee. Jae In comes to Eui Sik’s office to defend Yi Je, but Eui Sik says that he has a witness to testimony Yi Je’s guilt. Meanwhile, Yi Je tries to track down Min Sik’s illegal transfer of medicine.

Min Sik gets investigated on suspicion of breaking the Pharmacy Law. So Geum goes to Yi Je and tells him she wants to join hands with him again. Yi Je gets appointed as the new medical director of Western Seoul Penitentiary, and Min Sik asks Jin Chul to stall Yi Je.

Yi Je goes to the Special Sector to see people who are on the VIP list. Jin Chul stalls Yi Je, and Yi Je takes a measure to make Jin Chul stay out of it. Eui Sik goes to Jung Hee to find out some information regarding Yi Je. Meanwhile, So Geum watches the video files that Yi Je gave to her and finds out the secret of Han Bit.