Réalisation: David Bowers
Le voyage de la famille Heffley pour fêter le 90e anniversaire de la grand-mère laisse place au nouveau projet de Greg de participer à une convention de jeux vidéo.
Jason Ian Drucker
Greg Heffley
Alicia Silverstone
Susan Heffley
Tom Everett Scott
Frank Heffley
Charlie Wright
Rodrick Heffley
Owen Asztalos
Rowley Jefferson
Wyatt Walters
Manny Heffley
Joshua Hoover
Mac Digby
Mira Silverman
Brandi Beardo
Chris Coppola
Beardo
Kimberli Lincoln
Mrs. Beardo
Carlos Guerrero
Luis
Dylan Walters
Manny Heffley
Danny Vinson
Hog Man
Stephen 'Big Steve' Dupree
Tall Farmer
Neva Howell
Farmer Lady
Ricky Muse
Butter Vendor
Taylor St. Clair
Carnie
Kurt Yue
Fake Dad
Jacinte Blankenship
Security Guard
Beth Keener
Reporter
Jason Ian Drucker
Greg Heffley
Alicia Silverstone
Susan Heffley
Tom Everett Scott
Frank Heffley
Charlie Wright
Rodrick Heffley
Owen Asztalos
Rowley Jefferson
Wyatt Walters
Manny Heffley
Joshua Hoover
Mac Digby
Mira Silverman
Brandi Beardo
Chris Coppola
Beardo
Kimberli Lincoln
Mrs. Beardo
Carlos Guerrero
Luis
Dylan Walters
Manny Heffley
Danny Vinson
Hog Man
Stephen 'Big Steve' Dupree
Tall Farmer
Neva Howell
Farmer Lady
Ricky Muse
Butter Vendor
Taylor St. Clair
Carnie
Kurt Yue
Fake Dad
Jacinte Blankenship
Security Guard
Beth Keener
Reporter
Jason Ian Drucker
Greg Heffley
Alicia Silverstone
Susan Heffley
Tom Everett Scott
Frank Heffley
Charlie Wright
Rodrick Heffley
Owen Asztalos
Rowley Jefferson
Wyatt Walters
Manny Heffley
Joshua Hoover
Mac Digby
Mira Silverman
Brandi Beardo
Chris Coppola
Beardo
Kimberli Lincoln
Mrs. Beardo
Carlos Guerrero
Luis
Dylan Walters
Manny Heffley
Danny Vinson
Hog Man
Stephen 'Big Steve' Dupree
Tall Farmer
Neva Howell
Farmer Lady
Ricky Muse
Butter Vendor
Taylor St. Clair
Carnie
Kurt Yue
Fake Dad
Jacinte Blankenship
Security Guard
Beth Keener
Reporter