What is a terrorist doing at a remote research station in the Canadian North? How does he hide his true identity and deadly intent? The polar bear research station at Cape Churchill on the Hudson Bay is menaced by winter storms while the researchers and visiting media are beleaguered by bear attacks. But another force–a malevolent force–is also at work in this isolated camp on the tundra. Polar Circus introduces photojournalist Allsun Skelly and her friends, ecologists Neal Casimir and Guy Thorpe, who attempt to protect both men and bears in this spectacular and dangerous setting.