The earth lies waste, clean air no longer exists. Dense smog darkens the sky. Everyday life is determined by wearing a breathing mask, as well as a heavy oxygen tank. People work in factories to be paid with oxygen. This is also the case for Gahl. Since his father has been confined to a wheelchair since an accident at work, he has to help care for him. When his oxygen is stolen, he must decide how far he would go to save himself and his father.