The Deep End - Diary of A Wimpy Kid 15 by Jeff Kinney

With the help of his family, Greg Heffley embarks on a cross-country camping trip in the book The Deep End, 15th in the Diary of a Wimpy Kid series.

They find themselves stuck in a summertime RV park, which isn't exactly a tropical paradise. They wonder if they can save their trip-or if they're already too far gone. When the skies begin to open and the water starts to rise, the Heffleys fear their vacation is already over.