An anonymous elderly man wakes up in a sanatorium at an unspecified location. He suffers from amnesia induced by a virus. The people call it 'night' because it steals memories and leaves only darkness. The State steps in with a new programme that can store memories and begins to harvest them all, 'just in case.' But is the virus really of natural origin or was it engineered to provide the next generation with a fresh start (and the State with an easily controlled population)? Quarantine, resistance, riots... Slowly but surely, the old man starts questioning the authenticity of his own memories, while growing increasingly conscious of another truth.