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The War with Grandpa

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Upset that he has to share the room he loves with his grandfather, Peter decides to declare war in an attempt to get it back.


  • Robert De Niro
  • Uma Thurman
  • Christopher Walken
  • Jane Seymour
  • Colin Ford
  • T.J. McGibbon
  • Rob Riggle
  • Laura Marano
  • Cheech Marin
  • Oakes Fegley

Did You Know?


  • The second movie Robert De Niro has starred in with the word "Grandpa" in the title.
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