After proving himself on the field of battle in the French and Indian War, Benjamin Martin wants nothing more to do with such things, preferring the simple life of a farmer. But when his son Gabriel enlists in the army to defend their new nation, America, against the British, Benjamin reluctantly returns to his old life to protect his son.

A deadly virus threatens to wipe out an entire Rocky Mountain town, leaving the town doctor to find some way to escape the soldiers who enforce the town’s quarantine and devise an antidote. Matters take a more deadly turn after the physician is captured by a dangerously unstable band of militia extremists.