Sempra has lived all of her sixteen years in an enclosed dome called
the Circadia Stable Living Facility. It is structured, sustainable,
and windowless. After the sun grew in intensity, causing society to
become nocturnal, it was the only safe place to go. No one remembers the
outside world. For 150 years the government has warned them about the
deadly sun, and savage, vengeful outsiders. There is only one punishment
for any crime: to be exiled from the facility. But Sempra is curious.
Beyond those walls, what is there to see? When she and her childhood
friend, Alden, discover a forbidden book, she begins to question the
facility, and, with it, everything she has ever known.