Condemnedtoseeonlywhenthenightfalls,theabandonedblindsisterswiththeuntraceablepast,LouiseandHenriette,shareahorriblesecret.Theirdaysareblack,theirnightsareblue,andtheirinsatiablethirstforwarm,bright-redbloodcompelstheorphanedpredatorstoroamtheill-litstreetsofParisinsearchofunsuspectingvictimstosustaintheirunholyexistenceonEarth.However,dangerlurkseverywhere,andthecity'ssad,memory-ladencemeteriescanonlyprovidetemporaryrefuge.Indeed,bloodbegetsblood.Isthereanendtotheblood-stainedsisters'tyranny?