Tom and Carol decide to formally end their marriage but are surprised when they both hesitate to finalize the divorce, sending Nathan and Debbie into a panic at the thought of their parents reconciling.
When Ray points out that Nathan has a history of being the worst wingman ever, Nathan embarks on a mission to be a better friend by becoming less self-involved. Also, Debbie and Adam disagree over what's best for their family's livelihood.
Nathan is assigned to cover a Sci-Fi Fest for his workplace and runs into a famous book author who has hated him since grade school. Meanwhile, Adam has an identity crisis when he learns that much of what he was taught on the commune was based on the mythology of Star Wars.
When staging their church's annual living nativity scene does not go as planned, Kip urges the Millers to stage their own rival show. Also, Carol asks Nathan and Kip to put aside their differences as a Christmas gift to her.