The world was dying. Scientists, along with their mysterious alien allies, had created a safe haven within the hollowed-out center of their world. It was supposed to be foolproof.However, as the saying goes, no plan survives contact with reality. Generations later, something triggered the imminent collapse of their world, and the creatures created to watch over humanity were forced to move to the fail-safe: A sentient, biological spaceship that was programmed to take them to a new world.But when the aliens return and change the course of the ship, things soon spiral out of control