Lee Howon is a successful lawyer living in Seoul. He has a good life. His job pays well, he has a nice house, and most of all he has two adorable young sons that he loves so much. Never mind that he's divorced; he's happy. Kim Sunggyu is his close friend and colleague, who also happens to be a widower and the proud father of a smart and cute little boy. Everything was okay, up until they met a pink-haired preschool teacher and a greasy gradeschool teacher.