War with Gandpa. To be honest I wasn't expecting much from this movie, but because it was Robert De Niro, I decided against my better Judgement to give it a try and was very pleasantly surprised. It has that home alone vibe to it, although not as good, but I did find myself laughing uncontrollably in at number of scenes. Its about a Grandpa(De Niro) who reluctantly moves in with his daughter and her family. The grandpa and the grandson clash over who should get the bedroom and an all out prank war breaks out.