Jang Geu Rim (Kim So Hyun) is a student at an arts high school who dreams of becoming a pop singer. At school she gets a new roommate, Irene (Sun Woong) who’s actually a boy. Irene’s persona is a pretty Female CF star and his actual name is Hyun Woo.

• Kim So-hyun
• Sun Woong
• Min Hoo
• Lee Jong-Bak
• Kim Hye-ji
• Kang Hyun-joong
• Yeon Song-ha
• Hong Yun-hwa