The War with Grandpa

Peter is thrilled that his 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.

Cast

Robert De Niro

Ed

Uma Thurman

Sally

Rob Riggle

Arthur

Oakes Fegley

Peter

Laura Marano

Mia