Naruto- More than a Number-Part 1.

A mysterious girl appears in the Leaf village, she is unable to talk and no one knows where she came from. Her name is unknown and she joins the one and only Itachi Uchiha's class at the academy. She begins showing potential and is considered a prodigy. What will Itachi do when this unknown girl starts getting better grades than him? And more importantly, who is she?

(I do not own Naruto, all credit goes to Kishimoto Masashi. I only own my own characters and change in story line).