Mike and Kathleen begin on the foundation, but their nail gun goes on the fritz and the posts aren't level. Dog mushers Paige and Cody run low on supplies. Mike and Teresa work on their foundation with a damaged excavator.

Mike and Teresa begin building their walls, but the winch is more dangerous than they realized. Paige and Cody use a boom truck, forcing the team to work extra cautiously. Mike and Kathleen find a nasty surprise at the bottom of the mountain.