An earnest, space-obsessed eleven-year-old narrates his own story as he assembles a mixtape of songs and messages intended for extraterrestrials; when his launch plans unravel he sets off on a cross-country journey with his dog to pursue the dream, confront family secrets, and come to terms with grief, responsibility, and what it means to be seen, all told with a child's wide-eyed humor and surprising emotional depth.