In 1891, Willa Abbot is a young New York socialite, but when her beloved father goes missing, she takes to the rails to find him. She becomes a Harvey Girl-a waitress at one of a dozen Harvey Houses along the Atchison, Topeka & Santa Fe train line. Saving her father hinges on a Spanish treasure map, outwitting ruthless con men, and tangling with an alluring Pinkerton agent.