What if ... you let a stranger into your house to use your phone, but while you've been patiently waiting in the kitchen, he just disappears ... or does he? Félix, an architect who has just split up with his girl-friend and inhabits a huge mansion in Barcelona, finds out how many hiding places there really are in his house. But are there enough to hide another person, a strange parasite of living space? Or is Félix really going insane?

Four young Americans travel to Europe to work as counsellors for a summer camp there. Before the kids arrive, however, a rage-inducing, demonic disease spread rapidly from animal to person, resulting in the counsellors desperately trying to escape the illness. However, the camp is in the wilderness, and with the phones out and cars wrecked, how are they going to get to safety?