Nick is not a good kid or a bad kid or a really smart kid; Nick is an idea kid. He's also the best class interrupter in the whole school - until he gets to Mrs. Granger's 5th-grade language arts class. A simple question about the dictionaries that Mrs. Granger loves - meant to distract her from giving the night's homework - leads to an oral report by Nick on the history of the dictionary and how words are created. What at first seems like Nick's defeat soon leads to his best idea ever: He will create a word. Which is how Nick and his friends start calling their pens "frindles." Mrs. Granger refuses to accept the new word for pen, which has been quickly adopted by the entire 5th-grade class, fighting against the 5th graders every step of the way. Once the whole school gets involved though, Nick begins to realize that while he started the "frindle" movement, it's now far beyond his control.