Princess Ozma's birthday celebration is set to be the most magnificent party of all time, and everybody who's anybody in Oz is desperate for an invitation. As for Dorothy and her friends, lost out in the lands beyond the Deadly Desert, they must use their heads and discover a way to get back to the Emerald City if they are to be in attendance on this most special occasion. But will they manage to get there in time? Book 5 of the 15 book series by L. Frank Baum. Journey through the magical world of Oz with Dorothy and friends with these beloved timeless classics.