In 1866, Lily and Rose, beautiful, mischievous identical twins, aged fifteen, set out in a covered wagon to the Colorado Territory with their stern minister father, the Reverend Daniel Wright. Lily and Rose have been as one since birth. Now they face identity crisis and loss as the challenges and attractions of their new life draw them apart. Daniel, because of a sexual indiscretion, has been sent away from his prosperous Boston parish to minister to a new church in a mining settlement at the foot of the Rockies. Full of guilt about his own sexuality, he strives to repress his vibrant young daughters amidst the adventures of the overland trail and the wide open culture of the frontier.