Dr. Wesley McClaren (Seagal) was the government's top immunologist before giving it all up for a quiet practice in a small Montana community. But the peace is abruptly shattered when a violent extremist group unleashes a rapidly spreading lethal biological agent and takes over the town! As more and more people die from a baffling illness, the edge-of-your-seat suspense only intensifies as McClaren races to outsmart the militiamen and find a cure before the insidious disease spreads world-wide!