Song Na Young (Eugene Kim), a happy woman who will lately become a mom but she’s not sure who’s the daddy of her child. Her husband, Jung Sung Min, was unable to make her pregnant and they were both hopeless of having a baby. So Sung Min's friends decided to help the couple through sperm donor. Suddenly, her husband died in an accident. So the three friends decided to be the father of the child.
Han Soo Hyun (Jo Hyun Jae), the most successful among Jung Sung Min’s friend. He’s neat and tidy. When he sees untidiness around his corner, he will clean this immediately. He hates untidy and tardy women. His dream is to be one of the richest men in Korea.
Choi Kwang Hee (Jae Hee), a comic book author and an unfashionable friend of Sung Min. Even if he’s an old fashioned guy, he’s still known as a pretty boy. He hates babies especially when he hears them crying. His dream is to have a Harley Davidson motorcycle.
Na Hwang Kyung Tae (Shin Sung Rok), a successful 4 years senior police detective officer friend of Sung Min. He’s desperate to get married and have his own kids but women in Korea hates policemen. He trembles when he sees sexy women. He dreams to be promoted.
Han Soo Hyun (Jo Hyun Jae), the most successful among Jung Sung Min’s friend. He’s neat and tidy. When he sees untidiness around his corner, he will clean this immediately. He hates untidy and tardy women. His dream is to be one of the richest men in Korea.
Choi Kwang Hee (Jae Hee), a comic book author and an unfashionable friend of Sung Min. Even if he’s an old fashioned guy, he’s still known as a pretty boy. He hates babies especially when he hears them crying. His dream is to have a Harley Davidson motorcycle.
Na Hwang Kyung Tae (Shin Sung Rok), a successful 4 years senior police detective officer friend of Sung Min. He’s desperate to get married and have his own kids but women in Korea hates policemen. He trembles when he sees sexy women. He dreams to be promoted.