63 user 9 critic

The War with Grandpa (2020)

2:19 | Trailer

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Releases October 9, 2020
Upset that he has to share the room he loves with his grandfather, Peter decides to declare war in an attempt to get it back.


Tim Hill


Tom J. Astle (screenplay by), Matt Ember (screenplay by) | 1 more credit »
138 ( 90)





Cast overview, first billed only:
Robert De Niro ... Ed
Uma Thurman ... Sally
Rob Riggle ... Arthur
Oakes Fegley ... Peter
Laura Marano ... Mia
Cheech Marin ... Danny
Jane Seymour ... Diane
Christopher Walken ... Jerry
Juliocesar Chavez ... Billy
Isaac Kragten ... Steve
T.J. McGibbon ... Emma
Poppy Gagnon ... Jennifer
Lydia Styslinger ... Lisa
Joe Gelchion ... Chuck
Colin Ford ... Russell


Peter is thrilled that Grandpa is coming to live with his family. That is, until Grandpa moves into Peter's room, forcing him upstairs into the creepy attic. And though he loves his grandpa he wants his room back - so he has no choice but to declare war. With the help of his friends, Peter devises outrageous plans to make Grandpa surrender the room. But Grandpa is tougher than he looks. Rather than give in, Grandpa plans to get even.

Plot Summary | Add Synopsis


Will Peter ever get his room back? See more »


Comedy | Drama | Family

Motion Picture Rating (MPAA)

Rated PG for rude humor, language, and some thematic elements | See all certifications »

Did You Know?


Uma Thurman and Christopher Walken have both portrayed villains in the Batman universe. Thurman as Poison Ivy in Batman & Robin (1997) and Walken as Max Shreck in Batman Returns (1992). See more »


Ed uses a drone to listen in on his grandson's conversation by hovering it outside his bedroom window. Not only do drones do not have microphones (as there are generally not many sounds that can be recorded hundreds of feet in the air), even if Ed had installed his own it would have been useless over the sound of the drone, and especially through a pane of glass. See more »


Favorite Time
Written by Ray Chew and Carlos Ricketts
Performed by Trackmasters (as The Trackmasters)
Published by Marro Songs Ltd. OBO Focus State Music Publishing and Kayla Jo Music Publishing
Courtesy of Marro Records LTD
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User Reviews

How on earth can this be a bad movie?
30 August 2020 | by frank-liesenborgsSee all my reviews

Yes it is predictable, yes the pranks are sometimes stupid etc. But do not tell me that you had high expectations for the plot? You knew this would be a simple and straightforward movie with an uncomplicated plot. You have a supercast, Robert De Niro, Uma Thurman, Rob Riggle, Jane Seymour and Christopher Walken. It is the same as going to see a LA Lakers game to see LeBron James playing. And at the same time you can enjoy watching the other superstars from the Lakers like Anthony Davis and Danny Green. This movie is very enjoyable to watch. Don´t have high expectations and you will be all right.

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Release Date:

9 October 2020 (USA) See more »

Also Known As:

The War with Grandpa See more »

Filming Locations:

Atlanta, Georgia


Box Office

Cumulative Worldwide Gross:

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Company Credits

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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

1.85 : 1
See full technical specs »

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