Builder Mike Williams gets all 45 of his logs peeled and starts to stack and insulate his cabin in Eagle Song. Builders Dave and Hans deal with dangerous heavy fog on their boat journey to Shelter island and struggle to lift heavy logs with limited help. Builder Adam Tschappat saves the day with an extra bag of cement and his team prepare the location and materials needed for the cabin's outhouse in the Wrangell Mountains.
The three build teams kick off their builds and each faces unique challenges while building in the remote Alaskan wilderness. Bruce Chambers and his crew begin building a cabin on LaTouche Island, while Mark Sams and his team begin building a cabin in Freshwater Bay. Then, Dave Poppert and his family begin building a family home on Point MacKenzie.
Bruce Chambers and his crew run out of supplies, putting their cabin build at a standstill. Mark Sams and his crew are challenged to make their foundation level and square, and Dave Poppert and his family deal with a non-functional milling machine while working on their family home.
The three build teams continue their builds in unique, remote Alaskan settings. At Bruce Chambers' build site on LaTouche Island, their worst nightmare becomes a reality when their backup generator dies. On Mark Sams' build in Freshwater Bay, near Hoonah, one of his crew is missing, and Mark hopes for the best. Dave Poppert is rolling solo despite the risks of building alone off the grid at Point MacKenzie, near Wasilla.
The three build teams continue their builds in unique, remote Alaskan settings. At Bruce Chambers' build on LaTouche Island, getting the log walls up continues to be a nightmare, but Bruce finds the perfect way to let off some steam. On Chichagof Island, Mark Sams and his crew endure pounding rain that makes the build miserable. At Dave Poppert's build, he and his team race against Mother Nature to get the roof up before the snow falls in Point MacKenzie.
The three teams continue their builds in unique, remote Alaskan settings. At Bruce Chambers' build on LaTouche Island, the team wrestles giant glulam beams into place and the situation turns disastrous after a poorly cut beam pushes out an entire wall. At Mark Sams' build on Chichagof Island, things get scary when the guys lose control of a 700-pound ridge beam. At Dave Poppert's build near Point MacKenzie, his lumber mill takes a hit after an order gets cancelled and reduces funds for his dream retirement home.
At Bruce Chambers' build on LaTouche Island, the team comes dangerously close to catastrophe as they install a 1,000 pound ridge beam. At Mark Sam's build on Chichagof Island, the team runs out of critical supplies which sends Mark and Chris on an emergency run to Hoonah to find replacements. At Dave Poppert's build near Point MacKenzie, Dave is making progress with getting support columns into the loft area, getting him closer to having a roof over his build.
At Bruce Chambers' build on LaTouche Island, rain has put everything on hold and the crew struggles to keep things dry. At Mark Sam's build on Chichagof Island, tensions run high on Rich's last day making the team uneasy. At Dave Poppert's build near Point MacKenzie, he and his crew rush to make up for lost time and work to get the trusses up and windows installed.
It's the end of the road for the three builders and their teams of helpful friends, family and handymen. At Point MacKenzie, Dave Poppert fights the cold and snow to finish his home in time for Thanksgiving dinner. Bruce Chambers lucks out when a friend comes to help put the finishing touches his Latouche Island cabin. In Southeast Alaska, Mark Sams and his team scramble to finish their cliff-side cabin on Chichagof Island.
A new generation of builders tackles the Alaskan wilds to build off-the-grid cabins. First-time builder Nick faces some harsh realities when he can't use the trees on his build site for lumber. Brannon's team develops a unique foundation system to build on permafrost, but they must fight nature every step of the way. Father and son team Jere and Ben take on a massive 5,000-square-foot floating lodge project, the most challenging and dangerous build ever attempted on Building Alaska!
Reality sets in for first-time extreme cabin builder Nick Blanco in Alaska as he fights the tides trying to retrieve pylons for his foundation and realizes he doesn't have the right equipment to dig postholes. Then Brannon's team gets stuck on the muddy trail bringing in more build materials, but eventually makes good progress on the front porch before an unexpected rainstorm shuts them down. Jere and Ben continue to build the massive aluminum barge one weld at a time, but when signs of fall creep in, the colder temperatures start to cause problems.
Jere, Ben and Tim put the finishing touches on the biggest project they've undertaken: building a 112-foot floating barge. They struggle with figuring out how to get a 40-foot trailer underneath it so they can transport it to the water, and hurricane-force winds change their plans and delay the launch. Nick gets help from his family and friends, but the group struggles trying to install the 27 pilings needed to build his dream fishing lodge and warehouse. In the end they solve the problem using some Alaskan ingenuity. Finally, Brannon's cabin starts taking shape as the crew does some heavy lifting putting up the gable end walls.
Nick experiences firsthand just how dangerous living in Alaska can be while hunting for driftwood to build his fishing lodge and warehouse. Jere and Ben's 112-foot barge starts its half-mile journey to the water, but nobody knows if they will make high tide so the barge can float the 13 miles to its new home at Alaska Sea Otter Sound Lodge. Brannon's team fights the rain and the remote building conditions to finally lift the ridge beam into place, hitting a major milestone in his cabin build.