What happens when a single moment changes everything? For seventeen-year-old Cheney, life on earth exists only in history books. The life he and over one thousand other people know is aboard the Plexus spacecraft: self-contained, systematic, and serene. But that was before the radiation wave.

Now Plexus has suddenly turned on them, becoming a terrifying and unrecognizable force. As the crew dwindles under attack, Cheney and his friends need to fight back before the ship that's nurtured them for so long becomes responsible for their destruction.