Started as best friends and dated for four years, the leaders couple, Kim Sunggyu and Lee Chaerin finally got married. and not so long after, they were given a pretty little daughter. Being a new mom was not easy for Lee Chaerin, though she used to take care of her group members and also her husband, made her decided to take on hiatus from entertainment industry until God knows when. While Sunggyu who's now becoming a solo singer was really supportive towards whatever Chaerin's decision as long as it make her happy. 

But still, stage is another important world for Chaerin. That's why she finally planned to go back to the industry again. But how could she leaves her daughter who's still a baby? Will Sunggyu who's full of responsibilty and somehow pretty careless can take care of her baby well while his wife away?