Spensa's life as a Defiant Defense Force pilot has been far from ordinary. And now, the Superiority--the governing galactic alliance bent on dominating all human life--has started a galaxy-wide war. Spensa knows that no matter how many pilots the DDF has, there is no defeating this predator. Except that Spensa is Cytonic. And maybe, if she's able to figure out what she is, she could be more than just another pilot in this unfolding war. The only way she can discover what she really is, though, is to leave behind all she knows and enter the Nowhere. To have courage means facing fear. And this mission is terrifying.