Daybreakers

In the year 2019, a plague has transformed almost every human into vampires. Faced with a dwindling blood supply, the fractured dominant race plots their survival; meanwhile, a researcher works with a covert band of vamps on a way to save humankind.

Daybreakers is a 2009 Australian-American science fiction horror film written and directed by Michael and Peter Spierig. The film takes place in a futuristic world overrun by vampires. A vampiric corporation sets out to capture and farm the remaining humans while researching a blood substitute. Lead vampire hematologist Edward Dalton's (Ethan Hawke) work is interrupted by human survivors led by former vampire "Elvis" (Willem Dafoe), who has a cure that can save the human species.