Judy Moody cambia de humor muy fácilmente, y ¡en un día puede pasar por todos! Desde que su compañerita sabelotodo sale en el periódico por ganar un concurso de ortografía, Judy se empeña a toda costa en hacer algo que la haga famosa a ella también. Everyone knows that Judy Moody has a mood for every occasion, and this time she’s in a jealous mood. Jealous of classmate Jessica Finch, that is, who gets her picture on the front page of the newspaper, just for winning a spelling bee. But when Judy Moody sets off in pursuit of her own fame and happiness, watch out! She is so determined, she just might find it - or will she merely become more infamous than ever?