Determined to confront her nemesis, Lisbeth Salander closes in on her target to settle lifelong scores, while Mikael Blomkvist attempts to track her down and protect her, in spite of the fact that he is powerless against her enemies.

After hacking into the Warcross Championships' opening game to track illegal betting, bounty hunter Emika Chen is asked by the game's creator to go undercover to investigate a security problem, and she uncovers a sinister plot.