Boo Yong Joo was once a famous surgeon at the peak of his career at a major hospital. But he suddenly gives it all up one day to live in seclusion and work as a neighborhood doctor in a small town. He now goes by “Teacher Kim” and refers to himself as the “Romantic Doctor.” Meanwhile, Kang Dong Joo became a doctor to make something of himself after growing up poor, and he seeks out VIP patients to achieve the success that he desperately wants. Yoon Seo Jung is a passionate young surgeon who is haunted by a mistake from her past and tries to get over it. When Dong Joo and Seo Jung meet the quirky Teacher Kim, their lives and careers will never be the same again.

In a world where an app alerts people if someone in the vicinity likes them, Kim Jojo experiences young love while coping with personal adversities.

Han Soo-Ho and Han Kang-Ho were born as identical twins, but they live totally different lives. Han Soo-Ho works as a judge and he is guided by principles. Han Kang-Ho's extensive criminal record contains 5 different arrests. One day, Han Soo-Ho suddenly disappears. Han Kang-Ho secretly takes his brother's place as a judge. Han Kang-Ho, who was once considered trash, becomes "Dear Judge" and highly respected.