Na Ije (cast. Namkoong Min)
He is a doctor in a university hospital. He comes from a humble background, but he was able to survive with his skills and personal charms. His father, who was convicted 17 times, was in prison when he was born. Upon the birth of his son, he made a resolution to become a new man. However, a leopard cannot change its spots, and he goes in and out of prison incessantly. There were times when Ije was ashamed of his criminal father and hearing-impaired mother, but he never hid them. Three years ago, he tried to save a pregnant woman with a disability who was in a car accident. But because of Lee Jaehwan, the son of the chairman of the hospital, he was wrongfully accused of medical malpractice and gets ousted from the hospital. He even got his license suspended without being able to properly treat the patient. Ije realizes that Lee Jaehwan is just one guy in the corrupt system, and he is not the ultimate target of revenge. Na Ije makes his bid for victory by applying for chief medical officer position in prison, where he plans to make personal connections with all the big shots in prison, including business tycoons, ex-president, celebrities and sports stars.