One day, Goo Jae Hee an American Korean girl sees a high jump competition on tv and immediately starts idolising the athlete, Kang Tae Joon. She finds herself moving to Korea from the US in order to enter the school Tae Joon is in. She successfully enrols but has to disguise herself as a boy, having travelled all that way in order to enrol in an all-boys-school.
During her time there, Cha Eun Gyeol who’s a football player also falls for her, not knowing that she’s a girl. He thinks he’s gay and loves her enough to admit his feelings for her, while thinking she’s a guy.
Seol Ha Na loves Tae Joon and as a sports public figure, she suddenly announces to the media that she and Tae Joon are dating, to everyone’s shock! Ha Seung Ri used to like Jae Hee before developing affections for Ha Na.
Meanwhile, a love triangle is formed between Teacher Lee, Coach Baek and the Doctor Jang Min Woo. Every athlete faces tough competition in their profession and love but Jae Hee has the toughest role of them all – pretending to be a boy and lying to everyone she cares about.
Goo Jae Hee (Choi Sulli)
Kang Tae Joon (Choi Minho)
Cha Eun Gyeol (Lee Hyun Woo)
Seol Ha Na (Kim Ji Won)
Ha Seung Ri (Seo Jun Young)
Teacher Lee So Jeong (Lee Young Eun)
Baek Kwang Min (Kang Kyung Joon)