Medousa, a disease that kills by turning the body into stone, has become a worldwide epidemic. Hoping for a cure in the future, some infected people are chosen to be put in cold sleep capsules in the underground facility of an ancient castle. Set upon by the monsters, they awaken and panic during escape. Only seven of the Medousa sufferers survive. The monsters continue to attack relentlessly. And the time limit until the disease consumes them approaches.