Disgraced journalist Mikael Blomkvist embarks on an investigation into the mysterious disappearance of a young woman, the niece of a wealthy and reclusive businessman, which occurred four decades ago. As Blomkvist digs deeper into the case, he forms an unlikely partnership with Lisbeth Salander, a brilliant but unconventional hacker with a troubled past. Salander, known for her punk style and a reputation for her unorthodox methods, brings her expertise to the case, and together, they uncover a web of corruption and secrets far darker and more expansive than they could have ever imagined. As they close in on the truth, Blomkvist and Salander are forced to confront dangerous forces that will stop at nothing to protect their secrets.