Sierra, Kyriè Sierra Davenport, her Dad, Gary Udell, and Sierra's little sister Brooke, Karly Avva discover their ancestors were a part of the Gold Rush in Sacramento through a journal written by William Riley Wimmer [Aria Leven Davenport]. Based off of real people back in 1855, we travel back with outlaws Rattlesnake Dick [ Jason Michael Shannon], George Skinner [ Joseph Baldrige], Cyrus Skinner [ Alex Harris], Rafael Excobar [ Carey White Jr.], and Romero [ Noble Engle] who rob two prospectors — Arlen [ Bill Bettencourt] and Henry [ Rob Tillitz] — panning for gold along a river bank. The journal — that Sierra finds in her Great Great Grandma Cecilia Wimmer's [ Toni Corbett] house — takes us back to 1848, the day John Sutter [ Mark Hoffman] takes his wife Anna DuBelt [ Meghan Bird] to his mill in Coloma, California where they meet up with James Marshall [ Dan L. Walters] and the Wimmer's: Peter [ Steven Sommer], Jennie [ Amber DeAnn], George [ Nolan Bourassa], young Sarah [ Grace Rose], and young William [ Adrien Bourassa], along with their house maid, Beatrice [ Courtney Leonard-Maye] to confirm the discovery of gold. The journal also tells of a possible treasure that William may have buried near Sutter's Fort. One day, his quiet walk, to his buried gold, was not quiet at all. William sees Samuel Brannan [ Steve Dakota] and Mee Lien [ Yinique Myo-Flores] who happened to be on a morning stroll. William also tells of his encounters with Victoria Marie [ Haley Hicks] — a girl who is infatuated with him — and her big brother Zeke [ Rob Hayes]. William also sees his older sister Sarah [ Susan Slaven] who happened to be looking for Benjamin [ Aramis Liam], William's younger half brother who was following william, and Martha Jane [ Claire Elizabeth], williams younger half sister, who was following Benjamin. Sierra, her Dad, and Brooke — fueled by the historic family information from the journal — search for The Golden Tree.