Each season, an idol group is given an infant or toddler to take care of, allowing them to experience parenthood to an extent. In the first season, Girls' Generation became 'mothers' to a nine-month-old boy. This was also the case for the boy band, Shinee, in the second season, though the child is four years old. In the third season, the girl group T-ara had to take care of three toddlers.
During the show's first three seasons, each group had to take care of the babies on their own, with some male celebrities acting as guest 'dads' in the first season. In the fourth season, Sistar became mothers to a baby boy, with Super Junior's Leeteuk as the father.
While all of the show's seasons have different concepts, they are still similar in ways such as the 'parents' being given missions and activities to do for the day with the children.
The second season started on January 19, 2010, and it features the boy band, SHINee, who have to take care of a 4-year-old toddler named Jung Yoo-geun. Like its previous season, the members have to deal with daily problems with having a child, such as preparing his meals, calming him down when he cries and doing other activities such as playing with him or teaching him new words. Because the members are not always with the child, they frequently sent him videos when they are away. In the final episode, Yoo-geun is given a time capsule by his 'fathers' which he would open when he turns 21. The season ended on April 6, 2010, with 12 episodes and a special episode.
