When Nathan learns why Debbie is Tom’s favorite child instead of him, he decides it’s time to fill his parents in on some of Debbie’s childhood secrets.
Sue Sylvester introduces the episode as a Christmas special that FOX did not allow to air from last year. The members of New Directions audition for roles in McKinley's living Nativity Scene. Meanwhile in New York, Rachel, Kurt and Santana work as Santa's elves at a mall.
With work on the 4th Street house nearly complete, Nicole continues to fix up the neglected exterior. The decorative fish scales and siding need repair and the whole house deserves a fresh coat of paint. In order to give this house a second chance in the neighborhood, Nicole must also add some curb appeal by building a fence and taming the wild lawn.
Work continues on Nicole's project in her hometown of Detroit, Michigan. The 1920s duplex lower unit's kitchen and bathroom need a lot of work, and fire damage isn't the only thing causing problems. The main plumbing stack that runs between both rooms has a huge crack in it, causing years of water damage that has the wall crumbling at the touch. A room off the back of the kitchen seems to have no purpose until Nicole comes up with the idea to turn it into a home office.
Chance The Rapper and Mel B are interviewed. Musical guests Questlove and Henry Rollins.
Leonard has to deal with the fallout of disproving Sheldon's new scientific discovery. Raj spends a week at Howard and Bernadette's apartment.
Walden goes on a date with an accident-prone model; Alan's date reveals surprising personal information about herself to him.
While Neal delves further into the mystery of the Codex, Peter takes on a classified espionage case with a fellow FBI agent: his ex-girlfriend.
Caroline offers Stefan an unusual form of therapy. Meanwhile, Damon tells Elena about a terrible ordeal in his past that he has kept secret for decades, and she shares with him some disturbing information she recently learned about her family.
Felix discovers the other boys unwittingly possess the magic needed to fight the evil thing that is threatening them.
As the team gets closer to the truth, loyalties are tested and relationships are pushed to the limit. Meanwhile, Cyrus has to deal with his own crisis and he realizes that he may have gone too far.
America's favorite housewife, Marge Simpson, turns to the All Stars to design a date night dress for an exciting evening out on the town with Homer. Guest judges Anthony Ryan Auld, designer Stacey Bendet and actress Abigail Breslin help to determine whose dress Marge will wear on a future episode of "The Simpsons".
The guys revive some classic jokes at their own expense; they go head-to-head debating nonsense in a humiliating elimination challenge.
When an investigation goes horribly wrong, Sherlock must testify in an official police inquiry which jeopardizes his and Watson’s future with the NYPD
April’s sisters arrive to help celebrate April’s upcoming nuptials and quickly get on her nerves. Matthew and Jackson are forced to work together when they witness a terrible accident, Callie and Arizona work hard to reestablish their relationship and Cristina is pressured to live stream an upcoming surgery. Meanwhile, a familiar face returns to the hospital.
Laura has to deal with a shocking revelation as the wedding gets underway.
A woman from Tennessee goes missing while hiking the Appalachian Trail, which tests the wardens' search-and-rescue skills on land and from the air for more than a week.