Bryan and Sarah Baeumler butt heads over their new lakeside retreat.

Bryan finds himself injured at a critical stage in the build, but just when he's back on his feet, Bryan must leave Adam and Sarah in charge on site. Then, the project hits a major setback when Adam discovers that lumber is missing.

Bryan battles Mother Nature as he tries to finish the roof, while Rebecca and Sarah's relationship hits a breaking point. Then, the Baeumlers enlist the help of a friend to work on the deck, and Bryan and Sarah clash over the interior finishes.

Stepping up as lead designer, Sarah joins Darren to face-off with Bryan over the siding and stresses about a key bathroom element that won't be ready in time. Then, Bryan comes up with modifications to make the cabinets and appliances fit in their spaces.

With his deadline looming, Bryan realizes the light at the end of the tunnel is further away than planned as final touches pull the crew in all directions. When the cottage is completed, Bryan and Sarah recount the most-memorable moments of the build.