Host, Mo is a quiet ranching community where everyone knows everyone and almost everyone earns their living from Host Tender Meats. This is where veterinarian, Eli Rudkus, decides to call home when his predecessor decides to retire. When Eli is called to the home of local rancher, Jacob Long, little does he know this routine house call will uncover a danger that could annihilate this small town. Fletcher Odermatt, owner of Host Tender Meats has been keeping a secret that he will go to any lengths to keep, even enlisting spitfire attorney Hayley Anderson to discredit Eli to the town. But when what seemed like a small parasitic problem becomes too large an issue to contain, Eli, Jacob and Hayley race against time, nature and science to save a town and perhaps the world.