The countdown begins for the birth of Zach and Tori's baby; Jeremy and Audrey stress out, but happily finish their big move; while Amy and Matt's separate romances continue to grow, they hope for a civil and fun future as co-grandparents.

With less than two weeks to go before their baby is born, Zach and Tori schedule the C-section, but the baby could come at any moment; Zach's recent health episodes place added concern on the soon-to-be parents.

Despite their fears, Tori and Zach face the reality that she may need a C-section; Jeremy and Audrey are nervous as they try to finalize the purchase of their dream home; Amy and Matt prepare to become grandparents in their own special ways.

On the eve of their baby shower, Tori and Zach find out whether their son has dwarfism; Jeremy and Audrey face a new hurdle after finding their dream home; Matt helps with the nursery; Amy and Chris have a serious talk about their size difference.

Jeremy and Audrey want a low-key gender reveal party, but family tensions may interfere; Zach's serious illness emphasizes all the hardships his child may face in the future; Amy pursues a different business venture; Matt tackles a big project.

Zach and Tori's vision of their family is forever changed by sudden tragedy and unexpected news; Jeremy and Audrey decide where they want to raise their family; Amy is excited to take her first step toward financial independence from the farm.

Amy struggles to define her relationship with Chris after 6 months together; Zach realizes he needs a new job to support his family, but he's skeptical when Matt offers a solution; Jeremy and Audrey are running out of time to make a big decision.

Jeremy and Audrey surprise the family with big news; to escape home nesting renovations, Zach and Tori leave town for a weekend; Amy and Chris face a potential bump in their relationship during a getaway; Matt and Caryn balance dating and work.

The family gathers to learn the gender of Zach and Tori's baby; both Matt and Amy navigate romantic relationships post-divorce; while Jeremy and Audrey ponder where to put down roots.