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Currently you are able to watch "The War with Grandpa" streaming on Channel 4. It is also possible to buy "The War with Grandpa" on Rakuten TV, Apple TV as download or rent it on Rakuten TV online.
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.
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