In this new reality show, 4 celebrity dad's will take on the task of raising their kid(s) on their own without mom's help! These dads could not be more different from one another and are on different sides of the personality spectrums.
Choo Sunghoon and Sarang are going to Osaka to meet Sunghoon's parents. Tablo is recovering from shoulder surgery, will he be able to look after his daughter Haru? Lee Hwi-jae has become the god of child care, now that he's familiar with taking care of his twins, Seoeon and Seojun. He goes to see an eye doctor to check the twin's eyes. The charismatic actor Jang Hyunsung is actually a very clumsy person at home. He's very friendly with his two sons, Junu and Junseo. He teaches Junseo how to ride a bicycle without training wheels.
Sunghoon and Sarang have so much fun in Osaka, Sarang spends her birthday at her grandparents' house and experiences various things she had never done before. Meanwhile, Tablo and Haru go to the aquarium to see fish, which are Haru's favorite thing in the world. Hwijae, worried about the twin's eyes, takes them to an eye doctor. They get their eyes checked up and Hwijae gets so scared by the sound of their crying. Also he takes them to a baseball park with him. Hyunsung goes to Junu's parent-teacher conference and gets surprised by Junu's letter and his performance in school.