Jim Johnson works as a special agent for a secret biological counterterrorist group.
After a difficult mission, he is looking forward to a llama packing trip with his longtime girlfriend Heather, in the remote mountains of Washington.
The trip is cut short when a dangerous bacterium, resistant to all antibiotics, is set loose in the University of Washington Medical School.
How can its deadly spread be stopped and what is the connection with mysterious murders in the Pasayten Wilderness.