When a Swedish couple are murdered in their apartment, a nation-wide manhunt begins for the prime suspect, Lisbeth Salander (Rapace). The couple were working closely with Mikael Blomkvist (Nyqvist) at Millennium magazine to expose the sex trafficking trade in Sweden, and Blomkvist, convinced of Salander’s innocence, starts his own investigation into his friends’ murders. Once again Salander and Blomkvist find their lives entangled in the most mysterious and dangerous way.