When Maddie discovers Mia is using her pregnancy as an excuse to opt out of the dreaded family Christmas at their parents' lake house, Maddie fabricates a yarn of her own to get out of the trip.

After the pediatrician tells Mia and Casey that their newly adopted cat should not be around the baby, the news triggers a competition between Mia's parents and Maddie and Ben, who believe whoever takes in the feline will also be named the baby's guardian.