Days before starting the school, she noticed that Joey Parker, a pop star guy, is going to go to school with her. Mary, when she was a girl, she loves Joey Parker music. One day, when she goes with Tami, her best friend, to a dance, and dance with Joey Parker, without knowing it, 'cause it was a masquerade dance.
When she was coming to home, she lose her MP3. Joey, desperate, wants to know who was his misterious girl by a contest: Say the 3 songs most heared of the MP3.
Mary, don't want to participate on it, 'cause she thinks it's useless because Joey and her are from differents worlds.
Days later, Joey discover that Mary was her misterious girl, and start going out. Then Mary cut the relationship because she sees him with Natalia, his ex girlfriend, in his house at night, but it all was a Natalia's plan. Joey tried to showed her the truth, but he couldn't.
At a dance contest, when Joey was singing, he stopped the music for look for Mary. Mary takes the stage with Joey, and they had a dance duel. There, they returned to their relationship.