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.