Ronny (Tyler Ritter) fakes an anniversary party for his mom and dad to convince a new boyfriend that the McCarthys are a loving and affectionate family.
Marjorie invites their upstairs tenant to join the family for Christmas and watch them play their extremely competitive gift-exchange game called the "Red Sox Swap.
Marjorie prepares a care package for Arthur with instructions on how to perform basic life skills, when she learns she needs to spend a night in a hospital.
Sean is set to be inducted in the high school hall of fame, while Marjorie finds herself in a bind when she blurts out that Gerard got in as well. Ronny attempts to help Jackie tell Faddy's mother about her pregnancy.