Sarah and Debbie are ready to take on the project of a lifetime -- building a home from plans that were on Frank Lloyd Wright's drawing table when he died. But first, the town must approve their plans. They visit legendary Fallingwater for inspiration.

With challenges mounting up and no general contractor on board, Sarah and Debbie make a critical decision about who will lead the build. They visit Frank Lloyd Wright’s last living original client for guidance on making adjustments to the plans.

Sarah overcomes missteps as a first-time general contractor. With no second chance possible, their red concrete floor needs to turn out perfectly. Modern building codes and materials force Sarah and Debbie to make updates to Frank Lloyd Wright's plans.

More than 60 years after the original plans arrive, Sarah and Debbie race to finish Riverrock. But a last minute flood threatens to stop their progress. Artisans, experts and friends come to see the space they created.