Henriette and Louise, a foundling, are raised together as sisters. When Louise goes blind, Henriette swears to take care of her forever. They go to Paris to see if Louise's blindness can be cured, but are separated when an aristocrat lusts after Henriette and abducts her. Only Chevalier de Vaudrey is kind to her, and they fall in love. The French Revolution replaces the corrupt...。如果有一天,地球上的氧气终将消失殆尽,那么人类的命运又会是怎样的? 本片大胆的想象末日的情景,终于地球上的氧气不再能满足人类的生存需求时,人类将手伸向了大海,而为了可以在海洋中自在呼吸,那么鱼鳃就将是未来人类的必备器官。人类为着这个伟大的自救计划,开始了大规模的残杀“人鱼”和制造有鳃人类的残忍实验。而就是在这样的世代中,一个普通的女孩和“人鱼”相遇了,是否有爱才能够让人自由自在的呼吸?。