Kim San lives in modern Korea. She is 312 years old, and she pays for her immortality by saving people from nightmares. She is shamelessly rich, intelligent, and cold-blooded.
But one day she finds herself inside another nightmare, where she meets a mysterious man who can communicate with her in dreams—yet for some reason he hates San. Who is he: fate or a curse? And how is he connected to a distant past that she doesn’t remember?