 "Aliens" follows the protagonist, Ripley, as she helps a group of marines fight off extraterrestrials.Despite conflicts with cast and crew during production, and having to replace one of the lead actors—James Remar with Michael Biehn—"Aliens" was a box office success, generating over $130 million worldwide.The film was nominated for seven Academy Awards in 1987; Best Actress, Best Art Direction, Best Film Editing, Best Original Score and Best Sound.