A young woman takes a babysitting job during a bad thunderstorm. She begins to receive frightening phone calls from a young boy who claims he needs help. It seems that the boy's abusive father has locked him up somewhere, and he can't get out. The woman calls the police so they can trace the boy's call, and then they all learn the shocking truth about the boy's whereabouts.

皮特（James Caviezel 饰）和卡拉（Claudia Karvan 饰）是一对生活在澳大利亚的年轻夫妇，他们的生活优渥，然而两人却因种种原因感情失和，婚姻濒临破裂。皮特为弥合这段感情，决定利用周末带着妻子去莫娜海滩度假。 他们的旅程从一开始便不顺利，卡拉抱怨皮特花钱浪费，大手大脚；皮特则话里话外暗含讥讽。夜路行车，夫妇俩失去原有方向，阴差阳错来到一片未知的海滩。这里风光秀美，渺无人烟，这让他们始终绷紧的神经暂时得以舒缓。当然，这种轻松感觉并未持续多久，夫妇俩的矛盾依然存在。在接下来的时光，两人各自为营，绝少共行，争吵攻讦频频。与此同时，这片宛若人间仙境的海滩似乎又隐藏着不为人知的危险，夫妇俩的假期终于变成了恶梦……

A couple becomes lost in a massive storm and seek refuge at a nearby farmhouse, only to be captured by deranged killers.

Four friends start to receive morbid Valentine cards and realise they are being stalked by someone they had spurned 13 years ago. A masked killer is on the loose and Valentine's day is soon approaching.