Tierney James, sixteen, struggles to endure the year in which she and other young women are banished to the wild until, purified, the survivors are allowed to return home and marry.

After getting away with murder, Grant Tavish plans his own form of justice, but before he can act upon it a cave system collapse traps him and four other teenagers miles below the surface, where they soon discover that they aren't alone.

Clay Tate, the son of a man murdered by devil worshippers, is targeted with unexpected friendliness by the children of the prominent farmers his father accused when Clay found him mortally wounded, a situation that pits Clay against a longtime crush and a hated rival.