Pedro Martín has grown up hearing stories about his abuelito—his legendary crime-fighting, grandfather who was once a part of the Mexican Revolution! But that doesn't mean Pedro is excited at the news that Abuelito is coming to live with their family. After all, Pedro has 8 brothers and sisters and the house is crowded enough! Still, Pedro piles into the Winnebago with his family for a road trip to Mexico to bring Abuelito home, and what follows is the trip of a lifetime, one filled with laughs and heartache. Along the way, Pedro finally connects with his abuelito and learns what it means to grow up and find his grito.