Lucille is having a sleepover party, and Junie B. Jones can't wait! That's 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 <i>some</i> way to make things interesting...