An aerial supply mission faces turbulent skies as Marty breaks ground on massive foundation posts for his cabin. Misty and Maciah begin an innovative greenhouse that requires lumber, but Matt and Katie must first troubleshoot the new sawmill.

With only two weeks left to finish their ambitious self-rescue, Marty races to complete the walls of the log cabin. Misty expands the garden and builds a goat shelter, while Matt takes the next generation on a hunt for gold.

In the season finale, Marty struggles to finish the cliff-top cabin. The family must risk another river crossing to get materials across for a final crucial build. Misty and Maciah begin their own dream cabin on the homestead.