After a series of brutal, unexplained murders in a remote forest, a rogue military unit is recruited to hunt for whoever - or whatever - has rendered the attacks. In order to carry out the investigation, they need the help of the only survivor, Kate. But first they have to get her released from the mental institution she's been confined to since the horrific attack.
A woman working at a biological research facility becomes ill when she contracts a deadly, new virus. Sometime after, she becomes a half-monster beast and kills her old co-workers. Some time later, a group of teens go into the old research facility to have a party and come face-to-face with creature