Mikael Blomkvist, publisher of Millennium magazine, has made his living exposing the crooked and corrupt practices of establishment Swedish figures. So when a young journalist approaches him with a meticulously researched thesis about sex trafficking in Sweden and those in high office who abuse underage girls, Blomkvist immediately throws himself into the investigation.

Swedish intelligence officer Carl Hamilton’s 7-year-old goddaughter Nathalie is kidnapped. When the kidnapping’s underlying motive becomes known, the Swedish authorities assume a passive role, forcing Hamilton to action. With the help of international contacts, Hamilton manages to get them on track. Hamilton, along with some military colleagues, plans a daring rescue mission.