When Lain Fisher wakes up in a hospital bed she can't remember anything from the last few months. It's no ordinary amnesia. As a trained Mindwalker, Lain knows all about wiping memories — she just never thought it would happen to her. When two young men break in and take her away, she's not sure if she's being rescued or kidnapped. One of them, Ian, she knows. The other, Steven, is a stranger to her ... but he claims they were friends. More than friends. Outside the world has changed beyond recognition. Right is wrong, enemies are allies, and Lain's erased past may be the key to fighting a totalitarian state with the power to manipulate the human mind. The only thing she knows for certain is that she needs her memories back. Her life depends on it.