Zoey Daniels has been tossed from foster home to foster home, where she grows up fast and tough. When she is placed in her "last-chance" home, she finds a reason to stay and turn her life around: her foster sister, Lexie, who is paralyzed and confined to a wheelchair.

After high school, Zoey is hired by a special government agency, the Department of Molecular Genetics (DMG), where she meets the other reason to remain: Daniel, her co-worker. The man she loves.

But there is something unique about Zoey. She can see fae. Because of this, the DMG hires her to work as a Collector: catching, researching, testing, and using the fae to save human lives. The work never registers on her sympathy radar. She was raised to think of fae as beasts that feed on humans and want to destroy them.

When devastation hits Seattle, Zoey's whole world is turned upside down. The electric storm connects her to a ruthless fae, a Wanderer named Ryker, whose dealings expose them to even more trouble and danger. They embark on a journey, running and hiding from both the government and fae, both of which threaten their lives and those they love.