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