The cities that survived the disaster are surrounded by dead sands for hundreds of years. Due to the strong radiation, ships have to climb into the upper atmosphere to cross the desert dividing the cities. She cannot breathe without a respiratory mask and dreams of flying south, where the air is cleaner, but she knows that she will not survive a heavy flight. He risks his life every day working in research stations in the sands, and wants only one thing - to return to his hometown - but he cannot, because of her.