"Luis's working-class family lives in La Paz. His father is a cook on an excursion boat. His mother makes the best tortillas in the city. Today Luis will spend the day on the boat, swimming with the tourists on the beautiful sea. The clear blue water is a magical world filled with colorful fish and playful sea lions. In the afternoon, the boat anchors and everyone goes for a hike. The sandy trail, high above the shore, reveals snakes, lizards, cactus...