Brandon's celebrating a big accomplishment! He's published his first book and is having a book signing. Meanwhile, since Erin is always doing so much for her family, Chad plans a sweet surprise for his very pregnant wife. But her night of pampering turns into a not so relaxing evening when Carson, Brooklyn and Everly join the party! Later, Josie, Carlin and Katie are on a mission to give Kelly Jo a special makeover for her anniversary date night with Gil! How will Gil react to Kelly Jo's spruced up look?

‘Tis the season for holiday traditions and baby additions! The Bates family stop by Zach and Whitney's house to enjoy some snuggle time with baby Khloe Eileen. But will protective big brother Bradley let anyone hold her? Later, it's time for fellowship and fun when all of the family "shower" Carlin and Evan with baby Love. Meanwhile, Erin and Chad welcome baby #4, Holland Grace, into the world. And it's a winter wonderland double date, when Trace and girlfriend Chaney join Zach and Whitney on the ice! And to celebrate the holidays, the family return to their yearly tradition of singing carols at an assisted living center and reflect on their many blessings as they get ready for a new year!