Daybreakers.

About Daybreakers

Daybreakers is a 2009 dystopian sci-fi action-horror vampire film written and directed by Michael and Peter Spierig. The film takes place in a futuristic world overrun by vampires, and centers around a vampiric corporation which sets out to capture and farm the remaining humans while researching a substitute for human blood. Ethan Hawke plays vampire hematologist Edward Dalton, whose work is interrupted by human survivors led by former vampire 'Elvis', who has a cure that can save the human species.