Evan Taft has plans. Take a gap year in Alaska, make sure his little brother and single mother are taken care of, and continue therapy to process his father's departure. But after his mom's unexpected diagnosis, as Evan's plans begin to fade, he hears something: a song no one else can hear, the voice of a mysterious singer... Shosh Bell has dreams. A high school theater legend, she's headed to performing arts college in LA, a star on the rise. But when a drunk driver takes her sister's life, that star fades to black. All that remains is a void--and a soft voice singing in her ear... Over it all, transcending time and space, a celestial bird brings strangers together: from an escaped murderer in 19th century Paris, to a Norwegian kosmonaut in low-earth orbit, something is happening that began long ago, and will long outlast Evan and Shosh.