Matt turns 50, which comes with a number of surprises.

One of the twins moves out of state, and Matt and Amy come to terms with the state of their marriage and the future of their family.

In the aftermath of losing their dear friend Mike Detjen, the Roloff family recalls his special place in their lives. They prepare for his funeral and turn an already planned housewarming party into an emotional get-together to honor his memory.

Family friend Mike Detjen is as involved with the Roloff family as he's ever been: building a new trebuchet, coaching the twins' soccer team. But when a heart condition suddenly takes Mike's life, the family must face coping with the loss of their friend.

Matt and Amy's families gather for their holiday celebration. Coordinating a meal for 25 guests is a lot to manage. The family get-together includes Matt's brother Sam (a little person), Amy's parents Gordon and Pat, and a guest appearance by Santa.

It's been over 2 years since both Matt and Amy's families got together, so they invite the Knights and the Roloffs to the farm for an early holiday celebration. Amy attempts to deck the halls and transform their home into a "Roloff Winterland".

Amy joins her siblings in Taos, New Mexico to celebrate her sister's birthday. They ride horses, raft whitewater rapids and experience a Native American sweat lodge, but the fun grinds to a halt when the chaos at the farm finds its way back to Amy.

Zach and Jeremy have reached adulthood-sort of. They're 18, but they don't seem ready to leave the nest. Amy prepares a pool party for the twins, but when Matt drags his feet on getting the pool in working order, the whole party is put in jeopardy.

Amy visits an little people friend in Napa, California, where she speaks at a local church group for Mother's Day. Back home, Matt tries to organize a big surprise for her: a gazebo built on her favorite spot on the farm.

Now that their old, yellow Volkswagen Beetle has been overhauled at a body shop. Matt takes Zach and Jeremy on a road trip to trailer it home. For Matt and his oldest sons, it's a journey of male bonding, discovery and discomfort.

With the remodel finally behind them, the Roloffs go to Orlando for a much-needed escape. Amy leads the charge to get the family into vacation mode, but it takes more than belly-dancing, alligator catching and grub-worm eating to loosen Zach up.

After over 6 months of work, the latest Roloff remodel is in the final stages. Tired of the family living on top of one another in 2 rooms, Amy has run out of patience with Matt's constant additions and changes. Jeremy crashes into the new garage door.

The upheaval of the Roloff remodel is at an all-time high. As stress takes its toll on the family, Matt announces his plan to move his business office into the house - adding to the chaos - and Amy worries that she's lost control of her household.

When Zach and Jeremy's school soccer team goes on a losing streak, Matt and Amy struggle to teach the twins life lessons in responsibility and perseverance. But on the sidelines, Amy's competitive nature erupts.

With money he's saved, Jeremy buys an old, broken-down car to fix up. But after he and Zach are busted for off-road "mudding" with their cars and breaking state law by driving with an underage passenger, Matt and Amy suspend the twins' driving privileges.

Matt takes the Roloff remodel outside and hires his old buddy Romi to build a new deck. Arguments with Amy flare up when Matt continues to make last-minute changes. Amid the construction chaos, Amy tries to focus on her preschool class graduation.

While Matt and Amy are in Vegas having a blast with their little people friends, the Roloff kids are on their own. Although Jacob is being a pesky little brother, his twin brothers encourage him to grow up by taking him along for an adventurous hike.

Matt ups the ante for his accessibility kit business DAS by taking Amy and a group of their little people friends to a Las Vegas hotel convention. Back at the farm, an overflowing toilet means chaos for the kids.

Thanks to his work at Sylvan Learning Center, Zach's grades are dramatically improving. For extra credit in history class, Zach makes a Civil War movie with his friends, but he has to scramble when he realizes he hasn't written a part for his girlfriend.

Matt and Amy are invited to speak together at a corporate conference. When Matt falls ill, Amy wonders if she'll be able to handle more than her share of the speech. Back on the farm the kids begin to learn what it takes to manage daily life on their own.

Molly puts her brothers to shame when she and her girlfriends are the first to spend the night out in the Native American plank house. Zach and Jeremy organize a campout with their buddies - but wind up worrying Amy when they don't return home on time..

After months of renovation, the Roloffs are remodel-weary - especially now that it's winter . But when Matt decides to "go green" and install a gigantic geothermal heat pump system, the whole family chips in to warm up their house again.

When Matt Roloff learns of dwarf children in Iraq who need medical intervention, he makes the difficult, dangerous journey into Baghdad to find the family, befriend them, and get photos and x-rays to bring back to America for evaluation.

When Matt Roloff learns of dwarf children in Iraq who need medical intervention, he makes the difficult, dangerous journey into Baghdad to find the family, befriend them, and get photos and x-rays to bring back to America for evaluation.