Heimo stalks his best hunting grounds and Tyler tracks caribou as the pressure is on to get a big kill before the harsh Alaskan winter takes hold. Charlie inspects his traplines but damage from summer wildfires puts his season in jeopardy.

The Raneys put their ingenuity to the test on a homestead in Hawaii that was destroyed by 20-foot thick lava flow. First they must bring life back to the property, then figure out how to make the structures mobile in case of another eruption.

In the Smoky Mountains, the Reathifords were ravaged by storms that caused crippling power outages that the Raneys solved with a water wheel. Now the homesteaders revisit the rescue and update on how their off-grid dream has progressed since.

In Wisconsin, the Raneys responded to the Shields/Roou homestead on the verge of being washed out by devastating storm run off. Now more than a year later, the homesteaders revisit the rescue and update on how their off-grid dream has progressed.

The Twetos brave the elements to deliver supplies to inaccessible areas.

Jim arranges to transport the casket of the dark winter's first casualty.

The Tweto family takes full advantage of Alaska's summer conditions.

The pilots brave the elements as hurricane-force winds roar into Alaska.

A Greenhorn pilot goes on the most challenging run of his short career.

The guys cope with an influx of teachers after the first snow.

Pilots embark on two white-knuckle flights involving something explosive.

Ariel's flying lessons end in disaster after a hard day of work.

Ariel attempts to learn the family business as Halloween takes over Alaska.

Luke takes on a daring rescue as winter's darkness overtakes Unalakleet.

Turbulence and angry passengers make for a long flight through Nulato.