Autistic and nearly nonverbal, twelve-year-old Nova is happy in her new foster home and school, but eagerly anticipates the 1986 Challenger launch, for which her sister, Bridget, promised to return.
A twelve-year-old boy named Moose moves to Alcatraz Island in 1935 when guards' families were housed there, and has to contend with his extraordinary new environment in addition to life with his autistic sister.