Posing as her twin brother in a boy band, a young woman wins the heart of her bandmates and fans, all the while searching for her long-lost mother.
Jang Keun-suk
Hwang Tae-kyung
Park Shin-hye
Go Mi-nam / Go Mi-nyeo
Jung Yong-hwa
Kang Shin-woo
Lee Hong-gi
Jeremy
Uee
Yoo He-yi
Kang Soo Han
Hwang Tae-kyung
Kim Sung-ryung
Mo Hwa-ran
Jung Chan
President Ahn
Bae Geu-rin
Sa Yu-ri
Kim In-kwon
Ma Hoon-yi
