After being blinded in a coup against the king, Joseon's greatest swordsman goes into hiding, far removed from his city's anguish. But when traffickers kidnap his daughter, he has no choice but to unsheathe his sword once more.

Jin-ho lost his parents in an accident when he was a child, he receives hypnosis to treat his trauma related to the accident. Do-hyun, a college student gets interested in Jin-ho's hypnosis and he tries doing it too.