Sang-hyun, a priest working for a hospital, selflessly volunteers for a secret vaccine development project intended to eradicate a deadly virus. However, the virus eventually takes over the priest. He nearly dies, but makes a miraculous recovery by an accidental transfusion of vampire blood. He realizes his sole reason for living: the pleasures of the flesh.
TRAILER: https://www.youtube.com/watch?v=Pj5xmmQj-lk
Wiki: http://en.wikipedia.org/wiki/Thirst_%282009_film%29
