Park Yoo-Ha studied hard in medical school and finished her intern course. She works hard to become a doctor due to her father. Her father raised 4 children by himself and her oldest sister also sacrificed for the family. Park Yoo-Ha is not interested in other people. Suddenly, her father marries a woman rich enough to own a building.
Meanwhile, Jung Eun-Tae works as a doctor. He volunteered for performing medical service abroad, but he comes back to Korea. Jung Eun-Tae is not interested in marriage, because his father placed priority on his medical work over family and Jung Eun-Tae believes he is like his father.
Park Yoo Ha, a dedicated medical professional, is motivated by her father’s sacrifices to become a doctor. Her father, who raised four children on his own, saw his oldest daughter marry into wealth. One day, his first love, now a successful businesswoman, reappears in his life. Meanwhile, Jung Eun Tae, a doctor who volunteered abroad, returns to Korea, disillusioned by his father’s prioritization of work over family, leading him to avoid marriage.