Calvin Barr is a solitary old man who was once a legendary assassin for the US government. His mission of killing Hitler was about to change the course of the Second World War. Now, Calvin is asked to return for a last top secret mission, to track down Bigfoot and eliminate him. Bigfoot lives in the depths of the Canadian wildlife and bears a deadly virus that threatens to spread rapidly to the population. Relying on the same abilities as during the war, Calvin must try to save the world once again.