Escaping Earth was just the beginning.
Two days before a comet wiped out civilization, myterious 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 and invisible floating platform. The creature claimed the comet was sent by a race known as grogers 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 advetnure filled with unforgettable heroes, terrifying monsters, and heart-pounding action.
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