Sharon Spitz (voiced by Alicia Silverstone) is an animal-loving ninth-grader who's facing the teenage years riddled with boy trouble, friendships made and broken, schoolwork and the usual popularity race. She's just been fitted with braces, which she begins to suspect are the cause of her troubles. But how can she explain that to her friends and classmates? Especially the snide Nina Harper (Katie Griffin), who doesn't seem to like her at all.