Twelve-year-old Marie, a good student and a promising violinist, has a secret: she suffers from a degenerative eye disease... Even if she is still able to see well enough to live a fairly normal life, she knows that eventually she will have to live in the dark. In the middle of the school year, her parents announce that they're going to take her out of school and board her at an institute for the blind. Marie, however, has other plans. She decides to hide the acceleration of her disease from her parents and school but realizes she can't do it alone. Having noticed that Victor, the class clown, has a crush on her, she uses the pretext of helping him with his homework to get him to help her.