Emily (Faith Ford) misses her daughter Heather (Emma Lahana), who is attending college in Boston. Since her father died, Heather is sensitive to her mom’s dependence on long-standing holiday traditions. This Christmas, Heather has planned a trip to Phoenix with her boyfriend, but tells her mother she is staying on campus to study.
A wish-granting comet is headed to Middleton. The residents are all excited to go to the observatory to watch it as it only occurs once every 100 years. Nick and Grace get nostalgic as they deal with the last few days of high school. Adam and Stephanie are over the moon with glowing reviews of their food truck while Abigail is heartbroken over Donovan and decides to take a trip to Europe to get way from everything.
