The Duggar kids stay back at home with lots of fun activities planned while Jim Bob and Michelle take a trip to El Salvador. But when Josie has a sudden health scare that sends her to the emergency room, her siblings must come to the rescue.

The Duggars share their secrets on how to run a large family while at a conference in Colorado. Later the family sneaks in some sightseeing, including a visit to the famed Garden of the Gods. And watch as the Duggars conquer their fear of heights.

Watch as this family of 21 comes together to clean up some of Jim Bob's rental properties. But the Duggars are not all work and no play, as they show when the family celebrates Joseph's 16th birthday.

When the worst snowstorm in Arkansas history hits the Duggars' hometown, the family is engulfed in a real winter wonderland. Watch as they weather the winter-weather with sledding, making snow cream and lending a hand to their neighbors in need.

Watch as the youngest Duggar boy gets to hang out with his older brothers as they demolish and renovate Josh's new car lot. But will Jackson's urge to play demolish his chances of hanging with the big boys again?

Michelle takes Josie to Little Rock for a checkup, but with Josie's recent hospitalization will they get the clean bill of health they are hoping for? Meanwhile, Jessa demonstrates the discipline needed to get the younger Duggars down for a nap.

Jessa, Jinger, Joseph and Josh all go under the knife for wisdom teeth extractions -- on the same day. But when Josh and Joseph miss a crucial step in preparing for the surgery, they become the ones who need a little wisdom.

The Duggar clan celebrate Grandma's 70th birthday. Meanwhile, when a tornado devastates Joplin, Missouri the Duggars rush to help with the search and rescue efforts.

The big family heads to the Big Apple to kickoff their book tour. But when Jim Bob, Michelle and all 19 kids try to navigate the NYC subway system, will they all make it to their destination or will some be left behind at the station?

Good Morning America's Dan Harris visits the Duggars for a day and has the quintessential Duggar experience. And the day gets busier for the Duggars when the older girls host a dating seminar. Meanwhile, Michelle is concerned when Josie becomes sick.