No heart beats inside him; the blood in his veins is no longer his own.
Alder sees for the first time in years, but not through his eyes—through a camera implanted in his brain. He glimpses only the sterile and lonely world inside the tower that is his prison. He is only a brain in a jar, a test subject that the scientist Nikaya is assigned to watch over.
However, something else is looming over them both: something unseen, something that steals minds and holds the secret to their lost pasts. Alder must protect Nikaya from what he has become and from the thing that surrounds and fills them both. Fighting for sanity and survival, they need to escape—or they will become entrapped forever.