The War with Grandpa
Robert De Niro, Uma Thurman, Christopher Walken, Jane Seymour, Oakes Fegley, Laura Marano, Rob Riggle, Cheech Marin, T.J. McGibbon, Isaac Kragten, Juliocesar Chavez, Lydia Styslinger, Heather Johansen, Colin Ford, Gage Lawson, Poppy Gagnon, Faizon Love
5.9 from IMDB
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.