The siblings continue building the tree house, which gets bigger and bigger; Joy and Sierra secretly plan a surprise baby shower; Jill and Derick have surprise guests in Central America.

Work on the tree house continues, but cold weather hampers the family's efforts. Meanwhile, Ben and Jessa go to St. Louis to meet with Christian rapper Flame, and inspiration sends Ben into the recording booth.

The girls hit the road for a weekend getaway, but encounter an unexpected detour on the way to their destination. Meanwhile, the tree house is ready for a big unveiling after weeks of work.

Jessa, Ben and Spurgeon travel to Central America to visit Jill, Derick and Israel. As they prepare for the trip, they travel down memory lane, revisiting Jessa's milestone moments, from engagement to motherhood, that have led to this emotional reunion.

Jessa and Ben experience what life is like in a foreign country with a young son; Jill and Derick remember their beginnings together in Nepal and the adventures that have led them to Central America.

In the Season 2 premiere, mission work continues for Jill and Derick in Central America; Jessa and Ben talk about their growing family; and Jinger shares big news about her future.

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Wilderness training continues for the Duggar siblings following a frightening encounter with a nocturnal visitor. Meanwhile, Jill and Derick celebrate their second anniversary; and Jessa and Ben are amazed by how fast Spurgeon is growing.

Jinger and Jeremy go on a whirlwind trip to see his family and friends; a look back at past Duggar courtships, with tips from the guys for a successful relationship.

Jinger, Michelle, Jessa, Ben and Spurgeon meet Jeremy's family and friends while visiting his old stomping grounds, culminating with an important question he wants to ask Jinger.

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The family comes together to relive some of the most memorable moments from season two, and a surprise guest makes an appearance.

A look back at the Duggar daughter marriages, when Jill and Jessa walked down the aisle just months apart.

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Jinger packs for her move to Texas, which includes a surprise gift from her family, before she, Jeremy and Jed drive to her future home; the siblings take a trip down memory lane by remembering Jinger through the years.

Joy and Austin's wedding day is finally here; a first look at this exciting and emotional event, with Joy walking down the aisle to become Mrs. Austin Forsyth; another Duggar has a surprise that leaves guests shocked.

Ben, Derick and Austin enjoy an afternoon at a trampoline park while Jessa, Jill and Joy shop for the perfect date night outfit. Jill and Derick share some big news with Israel. Meanwhile in Laredo, Jinger and Jeremy settle into married life.

Joy and Austin work together on a house flipping project; the family celebrates Spurgeon's first birthday; in Laredo, things heat up in the kitchen with Jinger and Jeremy

As Jessa's due date inches closer, family and friends help the Seewalds prepare for the new baby. Joy and Austin continue working on their house flipping project, and Austin asks Jim Bob an important question. Later, Jessa and Ben welcome their 2nd child.

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Jinger makes a care package for the family back in Arkansas. Meanwhile, the Dillards prepare to return to Central America; Austin has an important question for Joy; and Joe asks for permission to enter a courtship with Kendra.

Host Daphne Oz digs a little deeper into some of the season's biggest moments, from courtships and weddings to babies.

Host Daphne Oz gets the Duggars’ reactions to some of the biggest moments of the season; the couples square off in a fun game of “The Couples Showdown”; a special guest or two show up.

The Seewalds and the Vuolos meet up in San Antonio and take a stroll down memory lane; Joy begins her wedding planning with a walkthrough of the venue; the Dillards get settled in Central America; Joe asks Kendra an important question.