Lucille is having a sleepover party, and Junie B. Jones cant wait! Thats because Lucille lives in her richie nanna`s big giant house. But before Mother and Daddy will let her go, Junie B. has to learn all the rules of spending the night. Like no running. And no head-butting. And no talking back to the nanna. Only, what kind of dull party is that? Surely Junie B. will find some way to make things interesting...