Although separated by continents and decades, Josef, a Jewish boy living in 1930s Nazi Germany; Isabel, a Cuban girl trying to escape the riots and unrest plaguing her country in 1994; and Mahmoud, a Syrian boy in 2015 whose homeland is torn apart by violence and destruction, embark on harrowing journeys in search of refuge, discovering shocking connections that tie their stories together.

In 1776, after witnessing the execution of Nathan Hale in New York City, newly occupied by the British army, young Sophia Calderwood resolves to do all she can to help the American cause, including becoming a spy.

It's 1944, and WWII is raging. Jayna's big brother Rob is her only family. When Rob is called to duty on a destroyer, Jayna is left in their small town in upstate New York with their cranky landlady. But right before he leaves, Rob tells Jayna a secret: they may have a grandmother in Brooklyn. Rob found a little blue recipe book with her name and an address for a bakery. When Jayna learns that Rob is missing in action, she's devastated.