Chicago, 1893: the World's Fair brought people from all over the world. Buffalo Bill's Wild West, denied a place at the fair, rented acreage outside the fairgrounds and played to record setting crowds - the likes of which they would never see again. When Annie Oakley, performing with the Wild West, tries to help a friend, it sets her on a collision course with a serial killer who the press would later dub "The Beast of Chicago."