The International Inter-University Competition continues, this time taking Gwen and her companions from Fudan across the ocean into the domain of a living god, sitting atop the great temple city of Machu Picchu. With the scion of the sun god, Inti, as host and competitor, the group ventures into the darkest heart of South America—the verdant depths of Amazonia, an arboreal realm so dense the trees compress space and time.