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.
As Ronny looks for a way to be a good assistant to Arthur and Jackie pursues her dream job as a sportscaster, Sean and Gerard vie for the same coaching position.
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.
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.
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.