Two American girls were orphaned in Korea. Two year old Maya and four year old Kella have a chance with the show Hello Baby. Wishing to help orphan kids get adopted the staff for Hello Baby has decided to use the orphans for their show. They would stay with the idols and the idols would be full time parents.

Maya and Kella's idol dads are the Kpop band EXO-M

EXO-M doesn't have a clue.