Diary of a Wimpy Kid: The Long Haul is a 2017 American road comedy film written and directed by David Bowers. It is the fourth installment in the Diary of a Wimpy Kid film series, a standalone sequel to Diary of a Wimpy Kid: Dog Days, and the final live-action film in the franchise. It was based on the ninth book of the same name, with elements of the seventh, eighth, and tenth books in the series, and was cowritten by the books' author, Jeff Kinney. The plot follows the Heffleys as they go on a road trip to Meemaw's 90th birthday party, without realizing the various calamities that will occur along the way.

Plot

The Heffley family dines at a restaurant called Corny's, where Susan announces the family plan for a road trip to attend Meemaw's 90th birthday party, much to Rodrick and Greg's dismay. Greg is then sent to rescue Manny from inside a tube in the play area but ends up in the ball pit with a diaper stuck to his hand and freaking out while searching for Manny. He subsequently becomes famous when the footage is posted on the Internet, becoming an embarrassing meme called "Diaper Hands". Later, Greg learns that the Player Expo is taking place not far from Meemaw's house in Indianapolis. His favorite Internet star, Mac Digby, will be attending so he plans to sneak off from the road trip and secretly go to the Player Expo. As soon as they start, everyone's phones are immediately confiscated by Susan, so the road trip is "absolutely technology-free".