Saddled with a man’s name, Billy Jack Tate makes no apologies for taking on a man’s profession. As a doctor at the 1893 Chicago World’s Fair, she is one step closer to having her very own medical practice—until Hunter Scott asks her to give it all up to become his wife.

Hunter is one of the elite—a Texas ranger and World’s Fair guard specifically chosen for his height, physique, character, and skill. Hailed as the toughest man west of any place east, he has no patience for big cities and women who think they belong anywhere but home.

Despite their differences of opinion, Hunter and Billie find a growing attraction until Hunter discovers an abandoned baby in the corner of a White City exhibit. He and Billy team up to make sure this foundling isn’t left in the slums of Chicago. As they fight for the underprivileged children in the Nineteenth Ward, an entire playground movement is birthed. But when the fair comes to an end, one of them will have to give up their dream.

Will Billy exchange her doctor’s shingle for the domesticated role of a southern wife, or will Hunter abandon the wide open spaces of home for a life in the “gray city,” a woman who insists on being the wage earner, and a group of ragamuffins who need more than one breathing space?