Sonny Rogers has just gotten elected class president, he's a star baseball player, and has a cute girlfriend. But, thanks to the conniving of his rival, Harry Vanderpool, he and his whole family are going to have to move to Seattle! Sonny needs the help of his pals and his pesky little sister, Mary Lou, to get out of this one.

Sonny Rogers acaba de ser elegido presidente de la clase, es un jugador estrella de béisbol y tiene una linda novia. Pero, gracias a la complicidad de su rival, Harry Vanderpool, él y toda su familia tendrán que mudarse a Seattle. Sonny necesita la ayuda de sus amigos y de su molesta hermana pequeña, Mary Lou, para salir de esta.