Pete revisits his former home - a site where he built his very first treehouses. Revamping old treehouse building techniques with new and improved methods, the team fuses traditional wood with the power of steel, making these Nelson classics brand new.

The team tackles a Tulsa build in kilts to create a Scottish cottage in a robust pin oak. Sturdy enough to battle the Oklahoma winds, Pete builds his first ever "sky bridge" that connects the couple's home directly to their new treetop paradise.

An Arkansas family reaches out to Pete to build a giant bird nest treehouse. The 2-story, lakefront retreat will feature driftwood railings woven to look like a living nest, and a porch to drink Southern sweet tea on during sunset bird watching sessions.