Joel and Ben accompany Casey on a road trip to Vermont to help him move his stuff out of storage. Ben looks at the trip as an opportunity to bond with Casey; but Joel sees the road trip as his annual chance to go off -- way off - of his salt-free diet. Meanwhile, the Putney women organize Mia's baby shower, and Casey's hard-to-please mother, the earthy but rather quirky Ariel, comes for a visit. Mia goes out of her way to be accepted by her future mother-in-law, but things get heated between Vicky and Ariel when both want their grandchild to call them "Nana."

Mia and Casey are excited when Maddie gets them a meeting with one of the top wedding planners in the city -- the charming but very expensive Lorraine Ashley. But the too-good-to-be-true arrangement turns awkward when it looks like Lorraine is trying to upstage the couple's pending nuptials. Meanwhile, Ben realizes that he has been with Maddie for so long that his "flirting muscle" has gone soft.

After parents-to-be Mia and Casey adopt a cat, the pediatrician tells them they shouldn't have a stray animal around the baby. Maddie and Ben enter into a spirited competition with Vicky and Joel, all under the impression that if one of them takes in Mr. Meow-gi, then Mia and Casey will name that couple as the baby's guardian.