1905年4月，一群时髦的巴黎妇女来到屠场，喝牛血作为治疗贫血的方法，并成功地取得了成果。 　　附近有一个名叫马克的小偷，他正计划带着一袋金币前往伦敦，但必须避开他的追随者。他发现在一座山中隔离着一座城堡，由两名女服务员伊丽莎白和伊娃照顾，他们正在等待马奇欧尼斯及其仆人的到来

Condemned to see only when the night falls, the abandoned blind sisters with the untraceable past, Louise and Henriette, share a horrible secret. Their days are black, their nights are blue, and their insatiable thirst for warm, bright-red blood compels the orphaned predators to roam the ill-lit streets of Paris in search of unsuspecting victims to sustain their unholy existence on Earth. However, danger lurks everywhere, and the city's sad, memory-laden cemeteries can only provide temporary refuge. Indeed, blood begets blood. Is there an end to the blood-stained sisters' tyranny?