director oldboy comes slick vampire flick kangho song stars priest accidentally changed vampire cured deadly mysterious virus vampirism priesthood quite conflict able survive robbing hospitals blood bank unconscious patients might mind siphoned blood supposedly miraculous survival comes lives hakyun shins family shin cancer mother believes song cure it unfortunately songs vampirism raises levels lust height cant help fall shins young wife okvin kim kim intensely interested world vampirism two become lovers film goes weird directions think one experience themselves really mentioned chanwook parks mastery medium cinema god ive rarely seen masterful visual artist peak powers major flaw film little incoherent especially near beginning park interested telling stories mostly visuals difficult follow times works man fly film also perversely hilarious final sequence easily one best decade simultaneously heartbreaking delightfully ridiculous okvin kim become worldwide star film gives one best performances year