The gates open for pumpkin season, and Matt wonders if the kids will come; Amy and Chris join Zach and family on an RV camping trip; Matt shows Amy and Chris the refurbished farmhouse rental property, and he makes an announcement that stuns Amy.

Amy and Chris have a serious discussion about growing their family while Zach and Tori hash out some relationship issues. Although he hasn't yet talked to the family about the idea, Matt dives into his alternative plan for the farmhouse.

Parental demands push Zach and Tori to the brink; as Zach removes himself from another pumpkin season, Matt approaches Amy and Chris for help; with the farm sale stalled, Matt considers a daring plan B.

Matt comes to a realization about his family when he spends time with his mother in Arizona. Josiah's sleep schedule puts a strain on Zach and Tori's marriage. Amy makes a decision about her involvement in pumpkin season.

Amy throws a surprise party for Chris, but she worries whether she'll be able to keep him in the dark until the big day; Matt makes a trip to Battle Ground, Washington, and reflects on the importance of family after the loss of his father.

Zach and Tori's friends, the Witouses, visit them in Washington; with the farm up for sale, Amy reassesses her involvement in pumpkin season; Zach and Tori face harsh truths about Jackson's future; Matt deals with a heartbreaking tragedy.

Matt and Caryn meet Josiah for the first time; Zach worries Jackson might lose his confidence once he realizes he's a little person; Matt gets news that will affect his future with Caryn.

An unfortunate interaction with Chris forces Amy to think about her past. Then, naughty secrets are revealed when Matt hosts a barbecue for old friends, and Zach and Tori find themselves at a crossroads with Matt and Caryn.

Zach, Tori and the kids adjust to life with a newborn; Chris comes to a revelation about his past decisions; Matt and Caryn open up to friends about their strained relationship with Zach and Tori.

Matt's decision to sell the farm continues to cause a rift in the family; Zach and Tori scramble to make it to the hospital when baby number three decides to come early; Tori worries how the kids will react to the new baby.