In the icy desert of Antarctica, a group of Norwegian researchers makes an unexpected discovery in a glacier: the remains of an ancient alien ship and a frozen being that appears to have been asleep for thousands of years. When an American scientist, Kate Lloyd, is called in to help investigate the finding, she quickly realizes they are playing with fire. After the first contact with the organism, something inside it awakens and begins to transform the team members into grotesque versions of themselves.
As paranoia takes hold of the group, each man begins to suspect the others, trapped not only in the extreme cold but also in a struggle against a creature that can imitate any living form. With time against them and trust wearing thin, Kate must rely on her intelligence and courage to identify who is human and who has been absorbed by the creature.
The freezing climate is not the only enemy they face; tension and mistrust arise as they try to contain the being that adapts and learns from them. In a survival experiment where loyalty is put to the test and madness lurks around every corner, the true nature of horror manifests in ways as unpredictable as they are terrifying. Will they manage to escape alive before the unknown life form takes over everything?