Ae Sook is an orphan that runs away from every family she's been with. While running away from yet another family she soon runs into Infinite's Myungsoo not knowing who he is. She is then adopted by Wollim and has to live with Infinite under their rules. Being the stubborn person she is things don't exactly go smooth sailing. Ae Sook is then faced with obstacles from wanting to find her brother, to going back to school and making new friends.