The future. After an attack coming from somewhere outside of our planet, mankind abandoned the cities and took refuge underground. There the human race has lived for generations, losing the ability to see and also forgetting they ever had it. Thus, when a number of people begin to 'gain their sight', the underground government condemn them as sick and they are forced to flee and return to the city where once lived the human race. But where these rebels believe they can find a haven of peace and a new future, they will find terrible revelations about the past of humanity and a dormant threat that has been hidden for generations.