When the guys take a road trip to Vermont to get Casey's stuff out of storage, Ben sees the journey as a chance to get to know Casey better, while Joel envisions it as an opportunity to become a father-in-law gone wild. Back at home, the women throw a baby shower for Mia and invite Casey's quirky and demanding mother, who causes a ruckus with Vicky when both future grannies want to be known as Nana.