Eleven-year-old Gusta’s life, like the world around her, is about to change. Her father, a foreign-born labor organizer, has had to flee the country, and Gusta has been sent to live in an orphanage run by her grandmother. Nearsighted, snaggletoothed Gusta arrives in Springdale, Maine, lugging her one precious possession: a beloved old French horn, her sole memento of her father. But in a family that’s long on troubles and short on money, how can a girl hang on to something so valuable and yet so useless when Gusta’s mill-worker uncle needs surgery to fix his mangled hand, with no union to help him pay? Inspired by her mother’s fanciful stories, Gusta secretly hopes to find the coin-like “Wish” that her sea-captain grandfather supposedly left hidden somewhere. Meanwhile, even as Gusta gets to know the rambunctious orphans at the home, she feels like an outsider at her new school — and finds herself facing patriotism turned to prejudice, alien registration drives, and a family secret likely to turn the small town upside down.

    As she sets out to save the world, she finds herself at the forefront of events that shaped the early twentieth century. While working as a maid, she survives the sinking of the Titanic. As a suffragette in New York’s Greenwich Village, she’s jailed for breaking storefront windows. And traveling war-torn Europe as a journalist, she’s at the Winter Palace when it’s stormed by the Bolsheviks. Ultimately she returns to her homeland to serve as a nurse in the Irish Civil War.During Kitty’s remarkable journey, she reunites with her childhood sweetheart, Tom Doyle, but Tom doesn’t know everything about her past—a past that continues to haunt her. Will Kitty accept that before she can save everyone else, she needs to find a way to save herself? Or will the sins of her past stop her from pursuing her own happiness?