To cheer up her classmates after a gloomy week, Nancy thinks of a new celebration, Fancy Day, but when the day arrives Ms. Glass shows up without her fancy dress, and the class must think of a way to make her as elegant as everyone else.

Although excited at the prospect of a fancy class trip to the art museum, the bumpy bus ride to get there leaves Nancy feeling anything but fancy.

Nancy, who loves to use fancy words, and her friend Bree are proud to be the best spellers in their class, but when a spelling quiz proves tougher than Nancy thought, Nancy is faced with a difficult decision.

Nancy is about to lose her first tooth, but if she can prevent it from falling out until she arrives at school she will get a special necklace from the nurse.