Black Swan is a 2010 American psychological thriller film directed by Darren Aronofsky and starring Natalie Portman, Vincent Cassel, and Mila Kunis. Its plot revolves around a production of Tchaikovsky's Swan Lake ballet by a prestigious New York City company. The production requires a ballerina to play both the innocent White Swan and the sensual Black Swan. One dancer, Nina , is a perfect fit for the White Swan, while Lily has a personality that matches the Black Swan. When the two compete for the parts, Nina finds a dark side to herself.