The Revolutionary War has been won. The United States of America is now struggling to broaden her boundaries. And as new territories are claimed and named, two siblings discover the high price of freedom.

Adam Benjamin Gates and his twin sister, Rebecca, have heard their father's tales of his part in the Revolutionary War and his discovery of a great treasure that helped the Patriots. But they have grown tired of living in the past and long for the adventure and excitement promised in this newborn country. When they hear whispers of a voyage to be undertaken to explore the recently purchased Louisiana Territory, the siblings are determined to take part. Soon, Adam and Rebecca find themselves on a dangerous journey into uncharted lands. But the greatest danger is yet to come when they learn of a treasure hidden deep in the wilderness.

Set during some of the most important moments in American history, the Gates Family Mysteries follow the ancestors of Benjamin Franklin Gates (Immortalized by Nicholas cage) as they search for treasure and strive to clear their family name.