For Sully, the owner of an outdoor clothing company, it was supposed to be a simple backpacking trip with a potential client -- even if the client was the beautiful sports celebrity, Laura. Sully needed her to endorse his new product line, and all was going well, until they emerged from the isolation of the Colorado back country. Neither Sully nor Laura could have anticipated the horror awaiting them at the darkened Ranger station. They were unaware that an evil virus grown in a lab for military research had been let loose. A virus that turns its victims into twisted, crazed, cannibalistic monsters that bear little resemblance to the people they once were. They find themselves fighting for their lives -- and their sanity -- in a world caught in the grip of an apocalyptic nightmare.From the white mountains of Colorado to the shimmering blue Great Lakes, Sully and Laura flee from the twisted and evil creatures in an attempt to find a safe haven. It will take all of their athletic and outdoor skills -- as well as tons of luck -- to survive in a landscape suddenly overrun by ravenous monsters with unnatural hungers. And, as if that weren't enough, Sully thinks he might be falling in love...