In ancient Israel, during the time of the Judges, a dark age has descended. The men of the twelve Hebrew tribes have abandoned their God, and have failed to stand against their enemies for years.

Warlords rule the countryside, preventing safe travel, and the mighty empire of the Philistines seeks to control the homeland of Abraham's descendants.

A farmer named Shamgar learns that an army of Philistines is invading the valley where he lives peacefully with his family. As they approach, determined to destroy everything in their path, Shamgar must try to convince a frightened population to stand with him in the last place the Philistines can be stopped: a mountain pass known as the Boundary of Blood.

"In the days of Shamgar son of Anath...the highways were abandoned; travelers took to winding paths. Villagers in Israel would not fight..." JUDGES 5:6-7