The Browns flee the mountain during a dangerous lightning storm in the heat of fire season. To ensure their safety, they devise ingenious new fire safety measures, including a bush alert system and animal evacuation ark, which they put to the test.

As the siblings race to complete their ambitious water system, Billy gets news that shakes the Wolfpack and redirects their future. Meanwhile, Bear goes on an important hunt where he reflects on an important life decision.

It's late fall and the Browns kickstart their ambitious cabin build. Bam and Gabe go on a deer hunt as the family scrambles to pull off an "extreme" wedding on the mountain, but days before the ceremony, things take an unexpected turn.