Thousands of years ago, humans banished the Sidhe fairy race to another dimension. The beautiful, terrible Sidhe have stewed in a land of horrors ever since, plotting their revenge... and now their day has come.
Fourteen year-old Nessa lives in a world where every teen will be "Called." It could come in the middle of the day, it could come deep in the night. But one instant she will be here, and the next she will wake up naked and alone in the hellish Sidhe land. She will be spotted, hunted down, and sent back in pieces by the Sidhe to the human world... unless she joins the rare few who survive for 24 hours and escape unscathed.
Nessa trains with her friends at an academy designed to help her live. Her legs don't work properly and no one thinks she will survive The Call, but she's going to prove everyone wrong. As the days tick by and Nessa's classmates go one by one, that time grows ever closer... but with it too comes the threat of an even greater danger closer to home.
