Dr. Draxel Syl has a wild, off-Earth adventure with a drop-dead gorgeous lady named Leura Clauson. Reeling from this experience, he wonders about trying to learn what really happened, who Leura actually is, and what these strange happenings are about. This leads to his learning of the other universes and humanoids, and finally to his being abducted and transferred by "portal" to another part of our galaxy by a Segwah star ship captain. The Segwah are a humanoid species closely related to Humans, but from a different universe in a different dimension of space-time. The Scentar, another humanoid species, are from yet another universe in another dimension. The Scentar and Segwah have been at war with each other for millennia, invading each other's universes and killing each other. Drax, a principal gravity scientist of the Eegis project in Pasadena has inadvertently created a slowly growing tear in the space-time fabric between the Human and Scentar universes. This tear, caused by one of his research projects at Eegis, could cause the two universes to fold into each other, annihilating both. While the Segwah are virtually identical to Earth's Neanderthals, the Scentar are quite the opposite, slender and physically very beautiful by human standards. Both Scentar and Segwah have cultures very different from each other and from Humans as well. The Scentar are quite different in another way. There are twice as many females as males because each female birth is identical twins, while male births are always single. This makes their culture and morality based on two female twins bonding with a single male, a very unusual family structure and related sexual morality.