In a small rural community local police officers Zoe and Patrick begin their shift as normal but it soon becomes clear that something is wrong. Strange events unfold before their eyes, residents begin behaving strangely and mass suicide panic spreads amongst the community they are trying to protect. Zoe and Patrick realise they are under siege from alien machines as they become cut off from the outside world. They are forced to do battle against these uninvited visitors. With the help of some of the residents Zoe and Patrick begin unravelling the mystery and soon discover it is not all as it seems. Can Zoe and Patrick save their community and the outside world from extinction　　在一個小的農村社區，當地警察佐伊和帕特里克開始正常換班，但很快就清楚出了問題。奇怪的事情展現在他們眼前，居民開始奇怪的行為，大規模的自殺恐慌在他們試圖保護的社區中蔓延。佐伊和帕特里克意識到，當他們與外界隔絕時，他們正受到外來機器的圍攻。他們被迫與這些不速之客作戰。在一些居民的幫助下，佐伊和帕特里克開始解開這個謎團，很快發現它并不像看上去的那樣。佐伊和帕特里克能拯救他們的社區和外部世界免于滅絕嗎？