Summary: It's Nikki Maxwell's birthday!! Will it be a blast or a bust? Find out in Nikki's newest diary, the thirteenth installment in the #1 New York Times blockbuster bestselling Dork Diaries series! Nikki and her BFFs Chloe and Zoey have been planning a birthday party of epic proportions! There's just one problem—Nikki's mom says no way to the budget they need to make it happen. Nikki's ready to call the whole thing off, but some surprising twists might take that decision out of her hands, and help comes from the person Nikki would least expect. One way or another, this will be a birthday that Nikki will never forget!