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Hours before leaving the country, Kang Si-yeong steps in as a correctional physician and saves a life with the helping hand of Cha Yo-han.

Lee Yu-jun warns Si-yeong about Yo-han. When she confronts Yo-han about his diagnosis and crime, he questions the source of her anger.

Yo-han's past precedes him at his new workplace. Dreading a painful future, a famous athlete makes a heart-stopping request.

Si-yeong begins to understand Yo-han’s philosophy on pain management upon hearing the full account of the events from three years ago.

As patients fill the Pain Management Center, one in particular catches Yo-han's eye with his lack of symptoms. Son Seok-gi approaches Si-yeong.

Yo-han lets history convince a young patient to undergo major surgery. Si-yeong wins Yo-han's praises for finding answers through patients' stories.

Si-yeong becomes the first person to learn of Yo-han's secret. A suspected pandemic-infected patient enters the Pain Management Center.

The pain management team diagnoses a patient at war with unknown demons. Heo Jun asks for forgiveness. Si-yeong confesses her feelings.

A former actress receives treatment for a rare kind of cancer. Yo-han starts to experience worrying symptoms.

Yo-han's doctor tells him to choose between his career and his life. Min Tae-gyeong makes up her mind about her husband. A patient loses all hope.

During an investigation into a patient's switched-off ventilator, Seok-gi is surprised by the findings and Yo-han's actions.

Si-yeong embraces her role as Yo-han's guardian. A young patient returns with new symptoms. Yo-han and Seok-gi learn about each other's conditions.

Without consulting Seok-gi, Chae Eun-jeong takes matters into her own hands by publicly questioning Yo-han's qualifications to treat patients.

Seok-gi gets a tip from an unexpected source. At the disciplinary hearing, Yo-han's supporters advocate on his behalf.

Si-yeong tearfully bids farewell to loved ones. After pushing her away out of fear, Yo-han finally gives her his answer.

To Si-yeong's relief and disbelief, Yo-han reappears in front of her after three years of silence. His vision for healing comes to fruition.

발표 도중 몸의 이상을 느낀 요한. 결국 시영의 도움과 진심에 무장해제 된 요한은 시영에게 한 걸음 다가간다. 한편, 손석기는 의료기업 진무리전드의 수상한 점들을 발견하기 시작하고, 통증 센터 팀원들은 말기 암 환자의 마지막 소원을 들어주려 하는데..

마침내 밝혀진 요한의 비밀. 편견 어린 시선과 비난 속에서도 요한은 시영, 통증 팀원들과의 든든한 팀플레이 속에 기석이 쓰러진 원인을 찾기 위한 노력을 계속한다. 한편, 요한에 대한 진정성을 느낀 손석기는 요한의 병을 폭로한 채은정을 찾아가는데..

기석의 죽음에 큰 충격을 받은 요한. 의사로서의 삶도 시영과의 사랑도 엄두 내지 못하고 손석기의 시술을 끝으로 한세 병원을 떠날 결심을 한다. 통증 팀원들의 안타까운 마음들은 더해가고, 시영은 자신에 대한 마음을 솔직히 말하라며 요한을 설득하려 하는데..