Watchmen is a 2009 superhero film directed by Zack Snyder, based on the DC Comics limited series of the same name by Alan Moore and Dave Gibbons. The film is set in an alternate history where superheroes are real and have affected the outcome of major events such as the Vietnam War and the Watergate scandal. The story follows a group of retired superheroes who investigate the murder of one of their own and uncover a conspiracy that threatens to destroy the world. The film received mixed reviews from critics and was a box office disappointment, but has since gained a cult following. (100 words)