Go Nan Do, the owner, and creator of an IT research company must hide his existence from the world after his involvement as a hacker in a major case ten years ago. Presumed dead, the only people who knew of his existence are his step-sister and his companies CEO. Han So Yeon, an assistant manager at a glasses company, keeps her distance from people, due to her inability to recognize people’s faces.

Medical school student, Chang Min, and a dietitian, Jin Hee, fall in love and marry despite his family's strong opposition. When Chang Min marries Jin Hee, he gives up his medical internship to become a pharmaceutical salesman despite the fact that the rest of his family are successful doctors. Their married life is miserable as Chang Min's family looks down on Jin Hee and Chang Min begins to treat her poorly. They finally divorce and go their separate ways until they are suddenly reunited as interns working at the same hospital. Will this couple's tumultuous feelings for each other be rekindled?