Sarah is a thirteen year old girl who starts experiencing memories that are thousands of years old. She is initially confused when vivid memories from an unknown woman suddenly manifest within her mind when she's threatened with danger. She uses the knowledge in those memories to help her get out of trouble.

But a DNA swab exposing a unique gene has brought her to the attention of a company that specializes in genetic research. Sarah eagerly seizes the chance for a better life and the fact that she must share her memories as a condition of being accepted in a research project doesn't raise any red flags for her. Not yet. 

Over time, Sarah discovers she is a direct descendant of Innogen, a woman who lived during the time of the Roman invasion of The British Isles. Despite the excitement and confusion this knowledge engenders, Sarah is enjoying the life of a typical teenage girl, including a budding romance, when she realizes that many of her new friends also have ancestral memories. Sarah suspects the project's probing questions mask a hidden agenda and that the students' memories are central to a secret goal, but what is it? 

What Sarah doesn't know is that the company doesn't exactly have the best interests of their young charges in mind. They have a more sinister purpose, and they don't mind if it costs a few students their lives along the way.