A gruesome triple homicide attracts the interest of Detective Joona Linna of the National Crime Police. There's only one surviving witness—the boy whose family was killed before his eyes. The only problem is, he's lapsed into a catatonic state. Desperate for information, Linna enlists trauma expert Dr. Erik Maria Bark, hoping to hypnotize the boy and uncover the secrets locked in his memory. But, scarred by past experiences, Bark has sworn never to use hypnosis again. When the doctor breaks his promise, he triggers a terrifying chain of events that will put all their lives in jeopardy.