Going to the Barrier that protects the remnants of humanity from the threat lurking behind it is the hardest thing that could happen to me. That’s what I thought—until I infiltrated the team of the Guardians to spy and pass information to the client. But retrieving secrets that are carefully hidden is not as easy as I’d expected. And with each day it gets harder and harder to find a way out of the place where circumstances have trapped me, because other people’s secrets turned out to be far more dangerous than I could have imagined.