When a cougar shows up in British Columbia's Gulf Islands National Park Reserve, Park Warden John Haffcut sees it as an opportunity to deal with the overabundance of deer that have transformed the islands into an ecological hodgepodge. Foiled by landowners with a not-in-my-backyard attitude and a notorious cougar tracker intent on making away with the cat, John decides to take matters into his own hands, putting his career and the cougar's future in jeopardy.