Choi Yeon Ah (You), is a tall girl. okay, 173 cm. You're an ELF. You leave with your friends, Kim Ji Min and Jang In Young. Yeah, you kinda laugh at your friends name, In Young, which represents Leeteuk's older sister name. But she doesn't care because she is also an ELF. But what if someday, you realize that Choi Siwon of Super Junior is your brother