"On a spring morning, neighbors Valentina Kaplan and Oksana Savchenko wake up to an angry red sky. A reactor at the nuclear power plant where their fathers work--Chernobyl--has exploded. Before they know it, the two girls, who've always been enemies, find themselves on a train bound for Leningrad to stay with Valentina's estranged grandmother, Rita Grigorievna. In their new lives in Leningrad, they begin to learn what it means to trust another person....

"It's 1941, and tensions are rising in the United States as the Second World War rages in Europe. 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...