Don't pretend you know how I feel...

Song Minah has been ill since she was seven years old. Physically, she's perfect. No doctors can find anything wrong with her. Mentally, however... she's less than stable. She has been locked up from society for a good ten years, rarely given the chance to leave and learn to live a common life. This has given her the mentality of a child, unable to live a normal life in common society.

Kim Jonghyun has known her since she was five years old, and though he seems to grow, she remains the same, trapped in the ignorance of childhood. When he is finally given the chance to visit her after a year of separation, he brings the band along with him for their first introduction.