Woo Shin-Hye (Hwang Shin-Hye), who is divorced, lives with her mother and two daughters. Yeol Seok-Hwan (Ahn Seok-Hwan), who is a widower, lives with his mother-in-law and three children. These two families have totally different personalities and appearances, but Woo Shin-Hye and Yeol Seok-Hwan fall in love and marry. Since their marriage, the two families live under the same roof. Even though they have conflicts due to their differences, they become a real family.