Thirteen-year-old Cuban American Gonzalo joins his estranged grandfather on road trip to promote his grandfather's fantasy book series.

Gonzalo Alberto García has never considered himself the hero of his own story. He's an observer, quietly snapshotting landscapes and drawing the creatures he imagines emerging from them. Forced to spend the summer with his estranged grandfather, Alberto William García--the very famous reclusive author--Gonzalo didn't expect to learn that heroes and monsters are not only the stuff of fantasy. But that's precisely what happens when Gonzalo's CEO mother, Veronica, sends Alberto on tour to promote the final book in his fantasy series for children and Gonzalo must tag along, even though he feels no connection to his grandfather or the books. Together, they embark on a cross-country road trip from Mendocino to Miami in a classic 1968 Oldsmobile Cutlass S Convertible named Mathilde. Over the course of ten epic days on the highway, they will slay demons, real and imagined; confront old stories to write new ones; and learn what it truly means to show up for your family.