The story of a married couple who have spent half their lives as partners. They look back on the time they have spent together and rediscover themselves as they suddenly have to confront death.

Nam Hyun Joo married to her university senior Kim Do Young. They live a happy life as a husband and wife. Kim Do Young works as an architect and was once thought of as a genius in his field. His refusal to make compromises and stick to his style has caused difficulties with his job. One day, Nam Hyun Joo asks for a divorce while Kim Do Young's first love Shin Da Hye appears.