Sungmin was only 9 at the time when his parents sold him. They loved him dearly, more than anything, but unless they wanted a roof over their heads and enough money for food, this was their only option.  Sungmin was sold to Mr.Cho. His only task was to befriend Mr. Cho's son, Kyuhyun. It was difficult for Sungmin to befriend the young Cho. Kyuhyun was the selfish jerk who cared for nothing but his games, he and Sungmin were total opposites. It took a lot of effort, but soon the two were best friends. Like brothers even but nothing more. But before they knew it Sungmin was going home. His parents have earned enough money to buy their only son back.