Sam and Charlotte are divorcing after forty years of marriage. Charlotte convinces Sam to wait until after their grown children (Hank and Eleanor), grandchildren (Hank's kids Charlie, Bo and Madison), Charlotte's father and sister (Bucky and Emma) and Sam's aunt (Fishy) have enjoyed one last "perfect Christmas" before announcing the planned divorce. As scenes shift back and forth across the Cooper family members, their memories also briefly appear on screen as younger versions of themselves..