Prometheus is an upcoming science fiction film directed by Ridley Scott and written by Jon Spaihts and Damon Lindelof. The film stars Noomi Rapace, Michael Fassbender, Guy Pearce, Idris Elba, Logan Marshall-Green and Charlize Theron. Set in the late 21st century, the story centers on the crew of the spaceship Prometheus as they follow a star map discovered among the remnants of several ancient Earth civilizations. Led to a distant world and an advanced civilization, the crew seeks the origins of humanity, but instead discovers a threat that could cause the extinction of the human race.
I think it was supposed to be a Alien prequel, but they hired Damon Lindelof (Lost) to re-write the script and make it it's own franchise.