After an unexpected event (maybe a friend's sudden disappearance, a distant cousin's crisis, or even a wild adoption misunderstanding), Soobin, Yeonjun, Beomgyu, Taehyun, and Kai find themselves in custody of Uni, a black infant girl under one year old.
With zero parenting experience, no clue about hair care routines, formula ratios, or toddler tantrums, they have to become a makeshift family.
Uni quickly becomes the center of their world and their chaos.
(They can sell out stadiums and dance like gods...but can they change a diaper without crying?)