Star Trek is a 2009 American science fiction action film directed by J. J. Abrams and written by Roberto Orci and Alex Kurtzman. It is the eleventh film in the Star Trek film franchise, and is also a reboot that features the main characters of the original Star Trek television series portrayed by a new cast, as the first in the rebooted film series. The film follows James T. Kirk (Chris Pine) and Spock (Zachary Quinto) aboard the USS Enterprise as they combat Nero (Eric Bana), a Romulan from their future who threatens the United Federation of Planets. The story takes place in an alternate reality because of time travel by both Nero and the original Spock (Leonard Nimoy). The alternate timeline was created in an attempt to free the film and the franchise from established continuity constraints while simultaneously preserving original story elements.