Sarah and Debbie Dykstra 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.

With challenges mounting up and no general contractor on board, Sarah and Debbie make a critical decision about who will lead the build.

Modern building codes force Sarah and Debbie to make updates to Frank Lloyd Wright's plans.

Sarah and Debbie race to finish Riverrock, but a last minute flood threatens to stop their progress.