A Heffley family road trip to attend Meemaw's 90th birthday party goes hilariously off course thanks to Greg's newest scheme to get to a video gaming convention.
Jason Ian Drucker
as Greg Heffley
Alicia Silverstone
as Susan Heffley
Tom Everett Scott
as Frank Heffley
Charlie Wright
as Rodrick Heffley
Owen Asztalos
as Rowley Jefferson
Wyatt Walters
as Manny Heffley
Dylan Walters
as Manny Heffley
Joshua Hoover
as Mac Digby
Chris Coppola
as Beardo
Kimberli Lincoln
as Mrs. Beardo
Mira Silverman
as Brandi Beardo
Carlos Guerrero
as Luis
