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