Amy prepares to move off the farm, but Matt worries it will be a slow departure; Zach and Tori are pregnant with a baby girl; Amy searches for a new house; Chris reveals he has a big surprise for her.

Zach and Tori are shocked by news about their unborn daughter. Meanwhile, Jackson tries sleeping in his own bed for the first time and Amy gets frustrated.

Amy has big news on her house search but grapples with the reality of finally moving off the farm; it's the end of an era as the treehouse has to come down.

Matt holds an auction to help clean up the farm. Amy is closer to becoming a homeowner and Chris plans to surprise her at their anniversary dinner with a big question!

Amy and Chris are officially engaged; the nerves set in when it comes time for Amy to tell Matt that she's engaged; Zach is shocked about the news of his mom's engagement and can't believe that she forgot one request.

It's another pumpkin season at Roloff Farms, but when Amy decides to take a step back, the Roloffs realize it may never be the same again. Amy and Chris host a 1980s throwback prom, but Amy struggles when sad news upends her life.

Zach and Tori make final preparations for baby Lilah's arrival; Matt and Caryn prepare to babysit Jackson; Amy is in a cooking frenzy preparing meals for Tori's post-C-section recovery. Then, everyone scrambles when Tori goes into labor unexpectedly.

Jackson meets baby Lilah, and everyone is surprised by his reaction. Tori struggles with her recovery from the c section.