Every few years, the prestigious Seiso Academy holds a prominent musical competition, and only the very best students at the Academy are allowed to participate. Though all are eligible to apply, only students from the music department actually make it to the competition...until now. Hino Kahoko goes to this amazing school, though she is in the regular department and knows nearly nothing of music. That is until one day, when she meets a curious little creature who introduces himself as a music fairy by the name of Lili. This fairy gives the unwilling Kahoko a magical violin, which any one can play. That day, the names of the students who are to participate in the music competition are announced – and Kahoko's on the list! Suddenly Kahoko is thrown into a world of music, where every note counts, where she must strive to be perfect. And then there are the other competitors, a timid girl and five handsome, musical young men who are all effected by Kahoko's music in very different ways. One thing's for sure – Seiso Academy will never be the same.