The film revolves around Mikael Blomkvist (played by Michael Nyqvist), a journalist who is hired by a wealthy businessman to investigate the disappearance of his niece 40 years ago. He teams up with Lisbeth Salander (played by Noomi Rapace), a young and brilliant hacker with a troubled past. Lisbeth, also known as "The Girl with the Dragon Tattoo," has a unique ability to uncover secrets and track down information.