Diego and his daughter Xóchitl survive in Mexico City by selling myth-inspired paintings. While Xóchitl seeks to connect with her roots, Diego spins tales to boost sales. When Xóchitl’s secret mural summons Quetzal, a small version of Quetzalcoatl, she’s drawn into the world of Mexican gods. Now, Diego must face the myths he once faked to save her from becoming the Aztec Sixth Sun.