After her mother is murdered on Halloween, a rebellious teenager travels back in time to 1987 where she must stop the young would-be-killer and get back to her rightful time line before she's trap...

　　世界各地突然出现不明嗜血生物，它们靠声音狩猎，捕食人类，致使全球陷入巨大恐慌。失聪少女艾丽·安德鲁斯（琪兰·席普卡 饰）和家人被迫踏上危机四伏的逃亡之旅，然而更大的危险悄然而至。...