Florrie finds the adventure of a lifetime along the Santa Fe Trail, meeting new challenges and dangers, after her mother decides to move her family from Missouri to New Mexico.

Starting their journey from their home in Missouri, Florrie Ryder and her family are headed towards the promise of a new life in Santa Fe. As they cross the Great Plains of the midwestern prairie, fording rivers and climbing mountains, the Ryders encounter endless hardship as they undertake this great adventure.