The provincial town of Maiden Woods lies something behind the ambush. Something evil. Something that inspires fear. Something that should not exist, but it does. Sheriff Paul Shields (Kevin Durand) and his Deputy Alexander Saunders (Lucas Haas) are the ones who must solve the case, but are poorly equipped for what they are going to face. For things to become worse, Shields is going through a period of turning from emotionally. His little boy died recently and face difficult this situation, blaming himself for the tragedy and this was a strong blow on the marriage with his wife, Susan (Bianca Kajlich), who moved back to her mother.