A scientific experiment goes wrong, and a deadly epidemic sweeps through Scotland. Callie might have survived the disease, but she didn't survive the treatment. She was kidnapped and experimented upon at a secret lab, one that works with antimatter. When she broke free of her prison, she unleashed a wave of destruction. Callie's brother Kai is looking for her, along with his friend Shay, who has been infected and is beginning to change. Now they're...

"Believing that she is a carrier of the deadly disease they are calling the "Aberdeen flu," Shay has surrendered herself to the Royal Air Force and along with other survivors becomes an unwilling test subject in the effort to find a cure; but when the lab is attacked she and a few of the others with the strongest supernatural abilities escape, and her boyfriend Kai is determined to find her, while ghostly Callie, the true carrier, will atone for her...

Although Kyla has recovered some of her memories, she is not sure how they all fit together, whether she was really a terrorist, or why she is able to remember anything at all from before she was "slated"--but she is determined to find the answers.

Shay, her manipulative father, Xander, and the other survivors are hiding out at the secret Multiverse compound in Scotland, where Shay still hopes to find some trace of the real Callie, her boyfriend's missing sister, and heal the breach between herself and Kai--who remains her best chance to escape her father's clutches and stop the deadly contagion.