What would drive a woman in 1828 to head west across the Great Plains into the Rocky Mountains, risking death among hostile Native Americans, brutish mountain men, and wild animals? Why, the same reason as a man, of course - freedom. Like fur trappers of the early western frontier, Kathleen is a misfit. Growing up in the Irish slums of Boston and watching her mother die giving birth to a dozen children, Kathleen has decided to escape into a career as a schoolteacher, free of men; but when she sets out along the Santa Fe Trail, she finds that dry powder and steady aim are as important as reading, writing, and arithmetic.