Question: where do the vampires come from in 30 days of night

title: 30 Days of Night
text: Vampires flock to Barrow , Alaska , where the sun sets for about 30 days , allowing them to feed without the burden of sleep to avoid lethal sunlight . When the vampire elder Vicente learns of this plan , he travels to Barrow to end the feeding , to preserve the secrecy of vampires . Because of the cold , the vampires ' senses are weakened and a few of the town 's residents are able to hide . One such resident is Sheriff Eben Olemaun , who saves the town by injecting vampire blood into his veins . He uses his enhanced strength to fight Vicente , saving the lives of the few remaining townspeople , including his wife Stella . Suffering the same weakness as all vampires , Eben allows himself to die and turns to ash when the sun rises .