A brilliant fourth-year surgery resident from a top university hospital applies to work at a prison. What could be his motive?

Doctor Kang learns that there was more to his father's murder than he knew.

In Kyu (Go Kyung Pyo) once again turns to the Sunrim Hospital in order to save a pregnant women who had a fatal traffic accident.

Kang In Kyu (Go Kyung Pyo) tries to refuse the invitation of Go Jung Hoon (Cho Jae-hyun), arousing the suspicions of Go Ji In (Jeon Sang-min) about how deep the relationship between Jung Hoon and In Kyu goes.

Doctor Kang enters the dangerous world of black market organ trade...

Kim Hyung Bum's health grows steadily worse. Coordinator Go finally learns of how Doctor Kang and her father know each other.

All hell breaks loose at Shingwang Prison.

Doctor Kang discovers something sinister about the black market donors.

Center Chief Go confirms Doctor Kang's suspicion about the donors, but can he figure out who at Sunrim Hospital is facilitating the organ trade? Or will he come under fire himself?

Center Chief Go and Doctor Kang try to help the donor being threatened by Kim Hyung Bum and his right-hand man, but will they get caught in the crosshairs?

VIP's identity is finally revealed.

Doctor Go is hot on Kim Hyung Bum's trail.

Coordinator Go makes a shocking revelation about Doctor Kang's father.

Doctor Kang and Kim Hyung Bum finally go head to head. Can Doctor Kang make it out alive?

Doctor Kang's fate is uncertain as he lies unconscious on Kim Hyung Bum's operating table...

Doctor Kang finally makes his father's killers pay, but the things he did to get his revenge catch up with him.