Ten years after he began building Molly's Castle, Matt is dead set on completing what's become his most drawn-out and costly farm attraction. Amy begrudgingly approves until Matt's budget on the project begins to swell.

Amy helps Molly get ready for her first high school formal dance, but it's a bittersweet experience because it's also Zach and Jeremy's last.

When Matt's doctor says he'll need major spine surgery within 6 months, he decides to start checking items off his "bucket list". Against Amy's wishes, and despite his declining health, Matt takes Jeremy skiing.

Zach is in his final high school soccer season and due to his dwarfism, this could be his last chance to play competitively in an average height league. But when poor grades get him benched, Zach must scramble to improve them before the season ends.

As the twins' senior year of high school flies by, it's clear that Zach and Jeremy are not ready for higher education. Amy takes them to tour a local college, but the boys are way behind the curve in applying and getting accepted to a university.

It's Matt against the whole family as Amy encourages the kids' desire to have their friends over in the newly remodeled home. The result is chaos & clutter. Matt fights back by organizing the jumbled mess in the basement, which Amy uses for storage.

When Matt plans a Caribbean sailing vacation on a week that Amy can't get off work, the scheduling conflict divides the family. Upset that it won't be a true family vacation without his mom, Zach leads the charge to mutiny against his dad.

Matt travels with Jeremy, Jacob, Papa Ron and two buddies to the beautiful British Virgin Islands for an adventurous sailboat cruise. But Matt's increasing lack of mobility leaves him on the sidelines while the other guys enjoy all the activities.

Jacob turns 12 and his parents give him a cell phone, but when he racks up an outrageous bill -- with over 8,000 texts -- Matt and Amy doubt whether Jake is ready for the responsibility.

Zach takes the first step toward his aspirations of becoming a soccer coach when he leads Jacob's soccer camp. Taking control as coach proves to be a struggle and Zach wonders if he's got what it takes.

Mother's Day weekend is also the twins' 19th birthday, and Matt shocks everyone by announcing that he's going to Hawaii - alone. Feeling abandoned, Amy does her best to plan a fun camping trip for the kids.

Molly risks losing her perfect 4.0 GPA when she fails a test. In an effort to master Spanish, she stops speaking English altogether. Meanwhile, the twins' visit to a local university seems pointless as their senior year grades continue to flounder.

It's a Roloff family first as Matt, Amy and all the kids rough it on a Utah dude ranch. Cattle-drives and a fun poker game add to the excitement, and everyone waits to see whether or not Matt will get on a horse.

With lots of dude ranch fun yet in store, Matt decides to leave the trip early. After Matt skips several activities, he goes home, leaving Amy to finish another vacation alone with the kids.

Amy goes to Florida where she's the keynote speaker at a charity fundraiser and golf tournament. While she's there, she volunteers at a relief organization and has an inspiring visit to a children's home.

Matt escorts the Salman family out of Baghdad into Washington, DC and on to Roloff Farms. The Iraqi family experiences a cultural whirlwind as they emigrate to America with the hope of freedom and getting life-saving surgeries for their children.

As Matt and Amy's relationship continues to deteriorate, Matt slips into mid-life crisis. His spending goes over the top and he buys two Mercedes sedans at a time when he's still paying off their big home remodel.

After months of increasing problems with his hearing, Zach learns he needs ear surgery. But what begins as a short and simple procedure, becomes a lengthy reconstruction of Zach's eardrum.

Amy and Matt's families gather for the twins' pre-graduation party. Jeremy surprises everyone by making the honor roll -- but when Zach's report card includes a failing grade, no one knows whether he'll even be getting his diploma.

After years of growing apart, twins Zach and Jeremy attempt to reconnect on their first trip to Europe. Backpacking in Scotland without the rest of the Roloff family proves to be tougher than they had imagined.

Only a few days into their European trip, twins Zach and Jeremy have lots of fun in London, but trouble awaits them in Amsterdam - where personalities clash, tensions rise, and a visit to the city's infamous red light district causes friction.

Amy, Molly and Jake fly off to Italy, but when Molly gets sick on the plane, it threatens to ruin their vacation before it begins. Meanwhile, traveling in Germany, Zach and Jeremy visit a small town and run head-on into the language barrier.

Zach & Jeremy travel through Bavaria without a plan. After an awe-inspiring tram ride to Germany's tallest peak, an eye-opening tour of Dachau Concentration Camp moves them beyond words. Meanwhile, Amy, Molly & Jake journey from Rome to Pisa, Italy.

After getting lost in a small town on the edge of the Black Forest, Zach and Jeremy are invited by the Mayor's daughter to stay overnight at her house. In Italy, Amy, Molly and Jake enjoy the sights from Florence to Venice.

The Roloffs reunite in Nice, France and journey north by train to Paris. Determined to show the family an amazing time in the City of Light, Matt overbooks their schedule - and Roloff chaos erupts on the streets of Paris.

Under the guise of preparing for an LP soccer camp, Matt goes on a project frenzy - building a huge locker room and a mini Grand Canyon on the farm. Matt tries to sneak his schemes past Amy, who watches him like a hawk.

Matt appoints himself the manager of Zach's soccer team for the upcoming World Dwarf Games. Tension builds when Matt and Amy disagree about team sponsorship, jeopardizing her position as a Dwarf Athletic Association board member.

As Zach's LP soccer team gathers at Roloff Farms to train for the World Dwarf Games in Belfast. Matt and Amy get their wires crossed over the training agenda, and Zach is stunned when Matt announces he won't be traveling with the team to Ireland.

Matt skips the opening days of the World Dwarf Games, and Amy must scramble to get everyone registered to compete in the events. Juggling the roles of coach, player, manager and mom pushes Amy to her limits.

Zach's LP team, the Statesmen, vies for a gold medal in basketball at the World Dwarf Games. But when teammate Marty Klebba is rushed to the hospital with a health scare, the Statesmen's shot at glory is at risk.

Zach struggles to get his LP team, the Statesmen, focused on victory in the soccer tournament at the World Dwarf Games. In an intense final match, the team's gold medal hopes rest on Zach in a dramatic penalty kick shootout.

Amy decides to organize a major golf tournament fundraiser for the Dwarf Athletic Association and tackles learning to play golf herself. Meanwhile, Matt takes advantage of a distracted Amy and begins yet another costly farm project: a giant woodshed.

Amy embarks on a massive fundraising venture to raise money for dwarf athletics. The project turns out to be the biggest challenge of her life, as logistical nightmares and personal meltdowns push Amy's leadership skills to the limit.

With her golf tournament fundraiser facing financial failure, Amy struggles to balance being a philanthropist, wife and mom - especially when she's distracted by things that keep falling through the cracks at home.

Matt holds a "Fort-A-Thon" at the farm for disadvantaged children. He also hopes to inspire his own kids to get off the couch, get outside, and make something happen - which turns out to be a tougher sell than he expected.

Zach and Amy kick off the first ever LP Space Camp. Zach has trouble embracing a leadership role - while Amy realizes they're creating opportunities for little people from all walks of life.

Matt and Amy plan separate celebrations for their driver-to-be daughter, Molly. But while academics are smooth sailing for Molly, passing her driving test is a rocky road.

When the county springs a surprise inspection, the future of Roloff Farms is threatened. Matt scrambles to spruce up his attractions, but the county inspector threatens to shut down the farm before pumpkin season even starts.

With the twins' freshman year of college off to a slow start, Matt & Amy are concerned about their lack of motivation. Matt looks to teach the twins a valuable lesson by turning the management of the farm over to them at the height of pumpkin season.