Apocalyptic and Post-Apocalyptic, Science Fiction || In the mid-23rd century, Darwin, Australia, stands as the last human city on Earth. The world has succumbed to an alien plague, with most of the population transformed into mindless, savage creatures. The planet's refugees flock to Darwin, where a space elevatorcreated by the architects of this apocalypse, the Buildersemits a plague-suppressing aura. Skyler Luiken has a rare immunity to the plague. Backed by an international crew of fellow "immunes," he leads missions into the dangerous wasteland beyond the aura's edge to find the resources Darwin needs to stave off collapse. But when the Elevator starts to malfunction, Skyler is tappedalong with the brilliant scientist, Dr. Tania Sharmato solve the mystery of the failing alien technology and save the ragged remnants of humanity.