Taemin has been an orphan since he was five years old. His father didn't want him and his mother died in a car accident. With no other blood relatives, he had nowhere else to go. Taemin is now seventeen and in his senior year in high school. He has two passions in life; dance and children. Being the oldest in the orphanage, it's natural that the younger kids cling to him. He cares for them and loves them because they're really the only family he has. He has a part time job at a nearby daycare. While at the daycare, he tends to the children. While at the orphanage, he gives dance lessons to anyone who wants to attend. He's never too tired for anyone and simply loves to give. 

Minho is a young bachelor who's always been a ladies man, ever since he was younger. Now at twenty-one, he makes his money by modeling. He's made a name for himself and he's highly paid and always wanted. He's charismatic on the screen and in pictures, but his day-time life wears him out. By the time he gets home, he's exhausted and does nothing but sleep. 

Three months ago, Minho's world got flipped upside down. There was a knock on his door and standing there in front of him was a woman wearing a suit. Beside her was a three year old little boy. The woman told Minho the boy's name was Jung Yoogeun. The boys mother had passed away a few days ago due to cancer. She left a letter, stating that Yoogeun was Minho's child and she wanted him to care for him. She was sorry for keeping it from him but she didn't want to be a burden. But now that she was gone, Yoogeun only had one person left. After a DNA test, Minho was left with the option of giving Yoogeun up for adoption or raising him himself. In the end, Minho couldn't bear the thought of seeing his own son put in foster care. 

During the day, Minho puts Yoogeun in a daycare. The same daycare Taemin works for. During his time there, Yoogeun clings to Taemin and each time it's time to go home with Minho, he throws a fit. Finally, Minho begs Taemin to babysit Yoogeun, offering to pay twice what they pay him at the daycare. Taemin couldn't refuse such an offer. 

And so, our story begins.