The War with Grandpa

The name of this movie is The War with Grandpa released in 2020-08-27 and it's main theme is 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..