Troubled by bouts of sleepwalking and disturbing nightmares, graduate student Sarah Foster goes to her university sleep research center for help. But when she wakes up after her first night of being monitored, the world she lives in seems to have changed in subtle, Twilight-Zone-esque ways.

故事报告心理治疗师Alexander Strauss比来刚掉了妃耦，在他明智且善解人意的概况下，是本人还未深进正视的疾苦和掉。一位连环杀手囚禁了Alexander，并提出了不同日常平凡的要求：抑制他的杀人愿看。可是，在分解这人思惟的同时，他也在应对本人压制的心魔所带来的冲击，这一 进程也许和他的囚禁处境一样危险。