Missouri, 1849: Samantha dreams of moving back to New York to be a professional musician -- not an easy thing if you're a girl, and harder still if you're Chinese. But a tragic accident dashes any hope of fulfilling her dream and, instead, leaves her fearing for her life. With the help of a runaway slave named Annamae, Samantha flees town for the unknown frontier. Life on the Oregon Trail is unsafe for two girls, so they disguise themselves as Sammy and Andy, two boys headed for the California gold rush. Sammy and Andy forge a powerful bond as they each search for a link to their past and struggle to avoid any unwanted attention. But when they cross paths with a band of cowboys, the lighthearted crew turns out to be unexpected allies.