Jill and Jim Bob travel halfway around the world to see if Derick could be "the one." Back at home, Michelle spends some time with Jessa and checks in on her courtship with Ben. When Derick asks Jim Bob a very important question, what will his answer be?

Josiah is graduating! Before the family can welcome 400 of their friends to celebrate, they must clean up a huge mess. Anna & Josh are preparing to host the entire clan for a holiday meal but they get an unexpected phone call with a big surprise.

The Duggars have arrived in DC! The older girls brave driving in DC to record their audiobook. Josie, Jordyn & Mackynzie celebrate their 4th birthday by making candy! Later, the family visits a skating rink with lots of slips and falls.

When Ben and Jessa's courtship becomes official, the Duggar boys put Ben to the test. Later, the tables are turned on Jessa when she visits Ben's hometown. The whole family reflects on what it means that a Duggar daughter may soon be leaving the nest.

When Jim Bob & Michelle take new couple, Jessa & Ben, out on a double date, they discuss the importance of boundaries. Anna builds a playhouse. Jill and her buddy group make the Duggars' favorite snack. And the family may be in for more changes...

Another courtship may be on the horizon! The kids plan a surprise for their parents. In DC, Anna has her hands full taking care of the two boys, and Mackynzie. Jim Bob and Michelle make a decision that could change one of their daughters' lives.

Erin Bates is getting married! The Duggars travel to Tennessee to lend a hand. The girls help Erin with some last minute to-dos while the boys cook up some mischief. All eyes are on the new couple, who have saved their first kiss for their wedding day!

With a few days left in their trip, Jill & Jim Bob make the most of their time. While Jill volunteers at a birth center, Derick takes Jim Bob for a traditional Nepali shave. As the trip comes to an end, Derick has a surprise for Jill. What will it be?

Jessa and Jinger head to Ben's house, where his sisters teach Jessa how to cook his favorite meal. In DC, Josh & Anna, along with Jana and Joseph, embark on a skiing trip. Michelle spends time with Joy Anna as she tries her hand at the violin.

Jill & Jana assist at a birth as Jessa documents the day in pictures. Then, Jim Bob & Michelle visit a fertility doctor. Ben, Jessa, and chaperone Jinger head to DC to visit Josh & Anna. Anna wants to show Ben the city, but Josh has other plans.

Derick is finally home from Nepal, and the whole family has planned a super-sized welcome. Later, Michelle takes the courting couples on a triple date. And the kids surprise Jim Bob and Michelle with a dinner they won't forget!

While the girls are out promoting their new book, Derick takes the opportunity to do some secret planning back at home. After getting permission from Jim Bob to ask for Jill's hand in marriage, will he be able to pull off an intricate proposal?

Take a hilarious and touching walk down memory lane with the Duggars and Cousin Amy as they share some of their favorite family events. And then Amy creates a brand-new memory when she makes a Duggar-sized announcement that none of her family sees coming!

Amy Duggar is headed to Nashville, y'all! With dreams of becoming a country music star, she along with her mom and Grandma are packing up their bags and heading for this music city. Will she have what it takes to make it big in country music?