She manages to stay in the group even though the members had a really hilarious reaction to it because they were not expecting it out of their new GUY member. In this drama, they made it seem like idol stars are really rich, living in a big house together. But it was all for drama purposes. At first, Tae Kyung doesn't like Mi Nam and makes her life really hard. Shin Woo is friendly to her and Jeremy is just childish...almost like a little brother. Shin Woo was the first to discover that she was a girl but doesn't reveal it and even starts to fall in love with her. Once when she was in her normal state (by herself) dressed as a girl, he pretended to be somewhere else while still phoning her, telling her all the cool places to go and stuff. I totally fell for this Shin Woo character because he was so nice to her. Tae Kyung, later on, discovers that she's a girl and threatens that he will reveal it. Jeremy had no clue whatsoever until the very end when they disclose it but he was scared about the feelings he was feeling for Mi Nam as a guy member the entire time, HAHA!
During the time, Mi Nam starts to like Tae Kyung. To make her secret harder to keep, Yoo He Yi, an actress who is totally different on and off camera, likes Tae Kyung. She is nice in camera and is the nation's fairy but in person, she is mean, arrogant, and rude. He constantly tries to humiliate/disclose Mi Nam's identity as a girl. Then it was finally revealed that Mi Nam was a girl after He Yi forced Mi Nyu to confess that she is actually Mi Nam's twin and that was how Jeremy found out. By then, Shin Woo was already deeply in love and Tae Kyung had also started to like Mi Nam also. The three guys all promised to keep her secret. Afterwards, the real Mi Nam comes back and enters the group and Mi Nyu exits the stage. When the paparazzi, who had suspicions of Mi Nam being a girl, ripped off the shirt of Mi Nam, they only found bulging muscles of the real Mi Nam. Mi Nam ends up falling for Yoo He Yi (which I totally don't understand) and then Tae Kyung ended up being the one winning Mi Nyu's heart.