There is a Battleship in My Milkshake

Duncan could hardly wait until the two people he most admired and would spoil him to no end to arrive. To his surprise, when he walked into the kitchen for breakfast, Gramps and Granny were already there. After breakfast, Duncan told Gramps what his teacher said about the fact that there is a lot of history around us. What did she mean? Gramps decided they should take a trip to the mall. What did going to the mall have to do with history? Duncan was in for a few surprises about Gramps and history. And there was one more surprise waiting for him at home.