Four American counsellors at a European summer camp must deal with the outbreak of a rage-inducing plague that starts in the animals.

4 young Americans travel to Europe to work as counsellors for a summer camp there. Before the kids arrive, a rage-inducing, demonic disease spread rapidly from animal to person, resulting in the counsellors desperately trying to escape the illness. The camp's in the wilderness, and with the phone service, not any cars , they're desperate too stay alive and get help.

When young Americans arrive to work as summer camp counselors In Spain's wilderness, they get more than they bargained for. Much more. A water-born fungal disease turns them into savage killers, and being in the wilderness they're unable to contact anyone. To make matters even worse, they're being watched.

Against the backdrop of the unaccountable disappearance of three young Americans, a quartet of camp counsellors arrive at the remote El Buho Summer Camp in northern Spain to give English classes to local children. However, as the instructors prepare for the eventful season ahead, a horrible incident becomes the harbinger of violence, and suddenly, one of them snaps. As a result, a highly transmittable, frenzy-inducing virus begins to take hold, and no one is safe from harm. But when murderous delirium prevails over logic, the chances for survival are zero. Will the nightmare ever end?—Nick Riganas