But things take an unexpected turn, and they find themselves stranded at a campsite that's not exactly a summertime paradise. When the skies open up and the water starts to rise, the Heffleys wonder if they can save their vacation - or if they're already in too deep.

But things take an unexpected turn, and they find themselves stranded at a campsite that's not exactly a summertime paradise. When the skies open up and the water starts to rise, the Heffleys wonder if they can save their vacation - or if they're already in too deep.

• And don't miss Rowley Jefferson's Awesome Friendly Adventure, an all-new fantasy from Greg's best friend - the follow-up to the instant #1 bestseller Diary of an Awesome Friendly Kid: Rowley Jefferson's Journal.*