Byun Han-soo is a family man devoted to his wife and their four kids. However, Han-soo has a secret that he must take it to his grave. The person who burdened him with such secret is none other than his loving wife Na Young-sil. But as she watches their kids who grew up well, she has no regrets about the choice she made. One day, a popular and insolent actor Ahn Joong-hui shows up at the Byun household, and things start to take an unexpected turn.