Peter loves his Grandpa and happily looks forward to the man coming to live with his family until he learns that he must give up his room so that his grandfather has someplace to stay.
When Peter is forced by his parents to move into the "scary" attic, he decides that the only solution is to initiate a prank war with Grandpa until the man gives up the room. But Peter's grandfather isn't the type to go down without a fight.
Yet, Peter's Grandpa doesn't want to fight his grandson. Can he teach Peter this lesson before it's too late?