Early Reins takes place in the early 1800s, with six women on board a train headed to Sunshine Hill. When the train is hijacked, the passengers soon discover that these women are not as defenseless as they seem, with skills that prove useful in the face of danger. Margarette, a young woman aspiring to become a sheriff, leads the group in defending themselves against the robbers and bandits, aided by Spencer, another passenger with valuable expertise.