Spensa needs all the knowledge she gathered in the Nowhere to end the Superiority's quest for galactic dominance, but first she must determine how far she is willing to go for victory.

"Spensa has made it to the sky, but the truths she learned there about her world show that everything she knows has been a lie. Now, Spensa must travel to the end of the galaxy if she is to ever save humankind, which may prove not only impossible, but deadly"--