8 years old Minki is married to 2 years old Jonghyun..... Minki and Jonghyun's father's were childhood best friends who promised each other that they will Marry their kids once they grow up but unfortunately Jonghyun's family passed away in an accident leaving little Jonghyun behind all by himself. It was then minki's father took Jonghyun in the family and to fulfill his promise to his dear friend he married their kids....... And this is how Jren end up spending their childhoo