In 2016, Cancer mutates with the rabies and an unknown disease creating less violent zombie type creatures which is contracted through air. The disease mind controls you and whatever you work with a lot you eat. For example if you are a sewer plumber you will be a sewage eating zombie like creature. There are a ton of doctors and surgeons and people who have seen people blown up in the military so most of the people eat guts. You can never tell if it will eat you or not. It is still cancer though so you are also slowly dieing. 3 years later Dr. Jack Hightston is struggling to find a cure for the unseen killer because the population of the world is dropping dramatically.