一年一度的圣诞佳节终于到来，在狂欢派对上，投资公司职员大卫（布瑞恩·杰拉夫迪 Brian Geraghty 饰）终于鼓起勇气向刚刚辞职的美丽女职员艾蜜莉（艾丽丝·伊芙 Alice Eve 饰）搭话，聚会中途，二人驱车和他们的朋友科瑞（乔什·派克 Josh Peck 饰）一同返回。此时已近深夜，希望买点儿什么吃的的三个人进入某自动提款机服务站取钱，可是正待出门时却发现一个神秘阴森的身影站在外面，后者更在众目睽睽之下杀了一个陌生的流浪汉。...
Without warning, millions of mysterious alien "doors" suddenly appear around the globe. In a rush to determine the reason for their arrival, mankind must work together to understand the purpose of these cosmic anomalies. Bizarre incidences occurring around the sentient doors leads humanity to question their own existence and an altered reality as they attempt to enter them....
