Two kids, one boy one girl and two loving parents. Life was truly sweet, that was until one fateful day....

Luhan is one year older than Seohyun and was adopted into the Hyun household when he was a mere infant; Seohyun soon came into the world after him.

Luhan and Seohyun often argued and found it tough to be civil around each other, however as most siblings go they also shared a few rare moments where they were actually able get along. In essence, family life was great. That was until one specific year social services abruptly knocked on the door and informed the Hyuns that they are gong to take Luhan away. The explanations given were not reasonable and the nine year old was forcibly taken. The family fought to have him returned, attending several court cases only to be told that his welfare was in danger if he still resided with them, the explanations given did not completely justify the reasons for his forcible leave.

After years of trying, the Hyuns finally resigned and reluctantly resumed with their own lives. Ten years on another knock on their door was heard, once the door opened their life was transformed yet again; this time by Luhan reappearing in their lives. But this Luhan was not an inch of his former self and something told the Hyuns that they need to prepare them self for a long journey ahead.