An aggressive race of alien invaders that are desperately looking for living-breathing hosts has conquered mankind. Once they infest a human body, they take away all of the original memories. Only a very small number of conscious men and women are left in the world, and they're hiding from the oppressors in the mountains and the caves, trying to form a resistance. When the enemy abducts Melanie and puts a tracker inside of her to find out where the rest of the human race is hiding, she fights the parasite and takes over it. Nobody has ever done that before. Could she be able to use her unique position to find the aliens' weakness and strike back?