The Roloffs welcome Dan and Michelle Hamill and their three children to the farm; they get a taste of country life, meeting the animals, seeing the farm's castle and going on a treasure hunt.

In this exclusive 2-hour special, the Roloff family sits down with NBC News correspondent, Andrea Canning to share the incredible highs and heartbreaking lows from the most recent season of Little People, Big World.

Zach and Tori's wedding is just days away, and Jeremy is nervous about his best man speech, while Amy and Molly concentrate on the rehearsal dinner, but everyone is worried about a dreary weather forecast that could ruin the couple's dream ceremony.

A windmill cocktail bar for Zach and Tori's wedding proves to be a challenging construction job for Matt and Jeremy. Meanwhile, Amy and Matt visit a local grocery store to see if it will sell their salsa.

Amy hosts a charity mud run on the farm as a way to give back to the community. Meanwhile, Zach and Tori feel the pressure of planning their wedding.

Tori goes dress shopping while Zach gets fitted for his suit. Elsewhere, Matt and Amy launch the family's new salsa business; and Jeremy ponders his future in Los Angeles.

Amy tackles a do-it-yourself project with a friend as a way to deal with her empty-nest syndrome. Meanwhile, Zach asks Jeremy to play an important role at his wedding; and Matt and Amy finally discuss the future of their marriage.

Zach visits Jeremy and Audrey in LA and learns about married life. Matt makes a surprising purchase to improve his health. Later, Zack and Tori put Matt up to the ultimate challenge: move the church to help set the scene for their dream wedding ceremony.

In the season premiere, Zach and Tori's wedding is a few months away, and the whole family pitches in to prepare the farm for their nuptials. Meanwhile, Matt and Amy wonder what the future holds for their relationship; and Jacob makes a big announcement.

A look into Jeremy and Audrey's relationship, from their first meeting up to the wedding day; the family shares home movies and behind-the-scenes stories.