Struggle For Existence

Escaping Earth was just the beginning. Two days before a comet wiped out civilization, mysterious pods carried dozens of people to a strange menagerie inhabited by deadly specimens from Earth’s past. Sierra Preston made first contact with an alien that had been observing humans from an invisible floating platform. The creature claimed the comet was sent by a race known as gorgers and warned that no one could leave the menagerie. Sierra isn’t about to let that stop her. The Preservation of Species trilogy continues in Struggle for Existence, a post-apocalyptic science-fiction adventure filled with unforgettable heroes, terrifying monsters, and heart-pounding action.