Loudermilk, Ben, and Claire hit the road for New Orleans with the intention of crashing a wedding. Left to their own devices, the group goes off the rails.
Marcus helps Monica Potter's home goods store in rural Ohio; Monica has trouble relinquishing control to employees and her sister.
Ms. Cannon discovers that one of her students is an artistic prodigy. Mrs. Adler and Ms. Watson take the mini-society competition to a new level.
An "End of Year Show" at Joe's old school brings his family members together. Paul’s deepest feelings about his son’s autism emerge when Nicola makes a film of Joe’s behaviours. Eddie reaches D-Day with Holly, while Maurice makes a shocking proposal.
After Rita Deveraux tells Pride that Douglas Hamilton is about to make a deal to get out of prison, Pride and the team rehash the Clearwater case in hopes of locating his mystery partner and spoiling his bargaining chip.
Hamilton investigates the pharmacology and traditional uses of Kratom, a Thai tree with opioid-containing leaves.
An abandoned megacity in a remote jungle might be the home of an ancient treasure and a dark secret; when a mysterious circular stone structure is discovered in Scotland, experts investigate whether it's the fabled Round Table of King Arthur.
Frankie and Sue are devastated when Axl informs them that he's not going to church; Mike goes to war with the Glossner kids after they keep defacing his giant inflatable snowman; Brick attempts to wrap his first present.
After visiting a homeless shelter on Christmas Eve, Courtney realizes things for the needy could be improved and pledges to make it a joyous Christmas that every family deserves. But when he learns he doesn’t have the budget to deliver on his promise, Courtney loses hope and his holiday spirit.
As the squad investigates the mysterious death of a second woman related to the Tackles case, and a new theory materializes, Sharon faces a health setback. Meanwhile, Gus reacts unexpectedly to Rusty's partial solution to their ongoing relationship problems.
As head of the HOA Christmas committee, Jessica threatens to cut the neighborhood caroling this year due to last year's rocky performance. However, Deirdre says that her friend Holly, who teaches "Performance and Movement," will help get everyone into tip-top, melodic shape. Meanwhile, Marvin becomes suspicious of Honey when she goes to see "Titanic" at the movies without him; Nicole develops her first girl crush and struggles with how to get her attention.
As Christmas approaches, Bull is amused when he meets a 9-year-old girl who wants to hire him to help her divorce her parents, but he’s shocked when a judge appoints him her temporary guardian. Also, Marissa discovers disturbing information about her boyfriend, Kyle.
Chip and Joanna take on a historical project for Courtney and Joey Scrivano, who are ready to upgrade from their modest loft to a house where they can raise their new baby; the 1927 Tudor home is outdated and lacks a true master suite.
Convinced that the universe is leading the way, a very confident Kevin heads to Laos with Tyler in search of the first righteous soul. Meanwhile, Yvette has her doubts about their mission and has a chance encounter with Tyler that changes both of their outlooks. Back in Texas, Amy goes all out decorating for Christmas and decides whether or not she’s truly ready to date again.
At a moral crossroads, Jace is forced to hand over something valuable to Dr. Campbell. The team at Mutant HQ is divided on what they should do next, so Reed and Caitlin take matters into their own hands.
While MacLaren, Carly, Trevor, and Philip work with another traveler team to protect a child important to the future, Marcy takes measures to remember her past life – but uncovers more than she bargained for.
In the spirit of the season, Franco convinces Arthur and the rest of the gang to help John, a homeless man who falls ill at the donut shop, get back on his feet. Also, Tush and Sweatpants compete to be the more popular Santa.
When Echo's egg-frying antics inadvertantly derail a man's life, he must venture to the fabled "Weird River" in order to retrieve him.