All sixteen-year-old Alex Nevus wants is to be two years older and become his sister Alice’s legal guardian. That, and he’d like his first kiss, preferably with Jerod Haynes, the straight boy with the beautiful girlfriend and the perfect life. Sadly, wanting something and getting it are very different. Strapped with a mentally ill mother, Alex fears for his own sanity. Having a fairy on his shoulder only he can see doesn't help, and his mom's schizophrenia places him and Alice in constant jeopardy of being carted back into foster care.
When Alex's mother goes missing, everything falls apart. Frantic, he tracks her to a remote corner of Manhattan and is transported to another dimension—the land of the Unsee, the realm of the Fey. There he finds his mother held captive by the power-mad Queen May and learns he is half-human and half-fey—a Haffling.
As Alex’s human world is being destroyed, the Unsee is being devoured by a ravenous mist. Fey are vanishing, and May needs to cross into the human world. She needs something only Alex can provide, and she will stop at nothing to possess it… to possess him.