Weaving between myth and science, past and present, the first Mayan astronaut remembers his childhood, growing up in a migrant farmworking community. Raised by his superstitious grandmother, Hugo struggles to find a connection to his estranged father, and his dead mother and twin sister he never met. After his grandmother tells him a story about the origins of their ancestors, he embarks on a magical adventure into the Mayan underworld, where he must rescue the family he never knew, and discovers that the truth lies somewhere in-between science and mythology.