One night in 1917 Beatrice Haven creeps out of her uncle's house on Cape Ann, Massachusetts, leaves her newborn baby at the foot of a pear tree, and watches as another woman claims the child as her own. A gifted pianist bound for Radcliffe, Bea plans to leave her shameful secret behind and make a fresh start.Ten years later, Prohibition is in full swing, post-WWI America is in the grips of rampant xenophobia, and Bea has returned to her uncle's house, seeking a refuge from her unhappiness. But the rum-running manager of the local quarry inadvertently reunites her with Emma Murphy, the headstrong Irish Catholic woman who has been raising her abandoned child - now a bright, bold, cross-dressing girl named Lucy Pear, with secrets of her own...