在声名狼藉的伦德沙姆森林不明飞行物事件发生33年后，三名金属探测器爱好者在同一地区寻找撒克逊人的黄金，在拍摄他们的探险时，捕捉到了令人难以置信的不明飞行物的镜头。夜幕降临，他们的导航设备失灵，他们发现自己面临着一个可怕的遭遇，存在一个无情的外星人。33 years after the infamous Rendlesham Forest UFO incident, three metal detector enthusiasts hunting for Saxon gold in the same region, capture incredible footage of UFO's whilst filming their expedition. As night falls and with their navigation equipment failing, they find themselves facing a terrifying encounter with an unforgiving alien presence.