Five average, middle-age friends take a girls-only weekend vacation together once a year. Leaving the traditional vacations behind for the first time, they decide to tackle camping and head for a beautiful park preserve in the Pennsylvania wilderness. On their first night, things take a turn for the worse when they encounter three mysterious mountain men who abduct them and bring them to their cabin with the intent to rape and torture them. Hell-bent on surviving and making it back to their loved ones, the women quickly cease to be victims and make unrelenting war on the men. Relying on instincts they never knew they possessed, the women resort to brutal and savage tactics, and soon turn the tide on their attackers.