At the turn of the millennium, people believed in the most incredible natural disasters that could threaten all life on the planet. However, the catastrophe that destroyed human civilization turned out to be man-made. A terrible virus that escaped from military laboratories killed most of humanity and turned the rest into bloodthirsty madmen. The world has turned into a post-apocalyptic desert, in which a few healthy people barely survive. A tribe of infected people living on the coast of the cold northern sea annually makes bloody sacrifices to Lamia, a huge, hardened mutant living in the surrounding area. This time the ritual is interfered with by strangers - pure ones, traveling in a submarine. When the first blood is shed in the clash between the pure and the infected, the situation quickly gets out of control - and it is further complicated by the angry and hungry Lamia, destroying all living things in its path...