换妻啪啪啪

　　暑期返回夏威夷的露西（约翰尼·斯奎娅饰）与父亲亚当（特洛伊·科特苏尔 饰）、妹妹艾琳及宠物黑猩猩本团聚。趁父亲因工作离家，露西与好友凯特（Kate）、汉娜（杰西卡·亚历山大 饰）及凯特的哥哥尼克策划了一场泳池派对。派对期间，本被一只患有狂犬病的动物咬伤，温顺的黑猩猩逐渐变得凶残。众人被迫困在泳池内，且在无法求援的绝境中，必须协作智斗发狂的本以保全性命。

 一对年幼的兄弟跟家人一起从大城市搬到偏远小镇，却发现新家并不单纯。他们能否与新朋友们一起解开家中的险恶谜团？

Four friends wanted to get away from it all for a birthday celebration in a remote country house, but when a mysterious injured man turns up on their doorstep telling tales of a city ravaged by a mysterious epidemic and the looters who have pursued him, the friends rally to help. As the night progresses, it becomes clear that all is not as it seems, plunging the friends into a battle for survival that challenges their deepest fears.

一位孤立的私家侦探被一位朋友说服，从躲藏处出来帮助找到她失踪的妹妹，让那些想让他的家人死去的人能够找到他。