Chris gets some much needed help from family to work on his interior, a floatplane with engine problems brings Chappie's build site to a standstill and Jeff makes a critical error while building the water tank system for his cabin.

As the final days of their builds approach, the builders work to complete their cabins. Jeff Erickson helicopters in the remaining furniture for his cabin, Chris Sewell's team works hard through the night to get the interior floors installed at Judd Lake and Chappie's team pushes themselves to finish the cabin's ladders, kitchen and master bedroom at East Butterfly Lake.