Everyone's grandpa is grumpy right? But why are they all so grumpy?Is it because they fall asleep at the oddest times or because they are always complaining about their aches and pains?Ricky and Chrissy's grandpa is the grumpiest grumpster of all the grandpas. So grumpy that they call him GRUMPA! They decide to invite Grumpa over for the weekend in order to cheer him up. But after numerous hilarious yet failed attempts will they find out why he is grumpy? And will they ever see him smile?