"The War with Grandpa" Peter and his grandpa used to be very close, but when Grandpa Jack moves in with the family, Peter is forced to give up his most prized possession: his bedroom. Peter will stop at nothing to get his room back, scheming with friends to devise a series of pranks to drive him out. However, grandpa doesn't give up easily, and it turns into an all-out war between the two. The next big family-fun film is hitting theaters soon! Check out the trailer for THE WAR WITH GRANDPA starring Robert De Niro, Christopher Walken, Uma Thurman, Rob Riggle, Cheech Marin, Laura Marano and Oakes Fegly. Coming soon to theaters! #WarWithGrandpa