Greg and his family are getting ready to hit the road – unforgettable adventures await them! What could be better than driving along the roads in a comfortable trailer and spending your summer vacation in a wonderful park called Paradise? But things take a bad turn: Paradise turns out to be not a heavenly place at all. On top of that, the heavens opened up and a real flood began. Will the Heffleys be able to swim out or are they destined to remain at the bottom?