The Wine of Violence

Marooned on the planet Quetzalia after their ship clashed with the irresistable force of gravity, Day One In Paradise is not quite the blissful Utopia fact-finding Nearthlings Francis Lostwax and Burne Newman were expecting. Tropical fronds turn out to be brain-eating Neurovores who decimate the rest of the scientists' crew, and a sweeping, majestic river becomes a bubbling cauldron of caustic 'noctus' or liquified hate.
Abandoning their craft, the two scientists flee to the Quetzalians, a peace-loving race guided by the precepts of the Ancient Mexicans. Together they vow to rid the planet of the evil Neurovores. But the technology-free Quetzalians demand that the Nearthlings destroy their machines and with them their lifeline back to the planet New Earth...