Scott's team stumble into a garden protected by primitive warriors who venerate the Invid. Annie is smitten by one of the tribesmen, named Macgruder, and wants to marry him. Accused of offending the tribe's ancient river gods, Scott and his squad are forced to play both sides against each other if they hope to survive. The tribe's attitude toward the team changes after they save Annie and Macgruder from an Invid attack, eventually helping them build rafts to carry the mecha through the river. Annie is left behind to let her live with Macgruder, which saddens the team.