Now that Jeremy & Audrey's daughter could be born any day, Amy grapples with her decision to travel with Chris and risk missing the birth. Zach & Tori embark on their first family trip. Matt gets serious about possibly moving away from the farm.

When Audrey's due date passes, she & Jeremy must play a waiting game. Amy & Chris return from their trip and attend a launch party for Matt's children's book that he dedicates to Zach & Tori's son. Later, the family gets news about Baby Roloff #2!

New parents Jeremy & Audrey are faced with very unexpected and emotional challenges. When Zach & Tori struggle to sleep train Jackson, Matt gets to work on a fun solution. Amy's birthday is coming up, but little does she know what's in store!

As Matt struggles to get everything set for Pumpkin Season, Jeremy & Zach juggle their duties as fathers with their farm responsibilities. Tensions rise when Amy negotiates selling her baked goods at the farm & the new pirate ship may be a money pit.

As Pumpkin Season comes to a close, Matt is helped by friend & actor Martin Klebba. Amy & Caryn find themselves working together to plan a closing party. Jeremy & Audrey face a health scare. Zach & Tori try to have a date night.

Matt & Caryn consider buying a vacation home in Arizona. Amy ponders her own future & if she will continue to live on the farm. Zach worries Jackson's 6-month checkup could uncover LP medical concerns. Jeremy & Audrey must deal with a major disaster.

Matt makes strides in his plan to divest from the farm. While Zach & Tori and Jeremy & Audrey enjoy a beach adventure with their little ones, the brothers discuss what's next for their families and the farm. Amy makes up her mind about her future.

It's Jackson & Ember's 1st Christmas! As Amy and Matt plan separate holiday parties, Amy hopes her kids will enjoy celebrating with Chris. At Matt & Caryn's party, he shares big news with Zach & Jeremy, bringing the farm's "future" into the present.

With their home still unsold, and bills mounting, Zach struggles to come up with the perfect low-cost Anniversary surprise for Tori. When the guys crash the ladies' beach trip, Amy and Chris butt heads. Tempers flare between Matt and Amy.

Meet the Browns, a seemingly regular family on the outside, but with a twist once you step inside their home. We also learn this extraordinary family is on the verge of another huge change that could transform the family’s dynamic forever.

Kody heads south to court his potential fourth wife, Robyn. Meanwhile back home, the wives express their true feelings about their new possible sister wife as they make preparations for Christine's new baby.

Kody and his teenage daughters throw a birthday party for his new fiancée, Robyn. Meanwhile, 1st wife Meri struggles with feelings of jealousy as the whole Brown clan moves Robyn and her anxious kids closer to the family home.

Kody's fiancée Robyn helps out with the kids while Kody and his pregnant third wife Christine go to the hospital. A week overdue, they must make an important decision on whether or not to induce labor.

While the three wives buy a friendship ring for Kody's fiancée Robyn, Kody prepares to celebrate his 20th Anniversary with his first wife, Meri. But when nothing goes as planned, will Kody end up in the dog house?

As the wedding day nears, the three wives help fiancée Robyn pick a wedding dress, a cake, and a venue for their unique polygamist wedding reception. Meanwhile, it’s Janelle’s birthday and Kody has a special trip planned just for the two of them.

The big day is finally here! Follow Kody and his wives as they make Robyn officially wife number four. See this extraordinary family as they celebrate the newest additions to their family and prepare to embark on a new chapter in their lives.