BioShock 2 is a first-person shooter video game set in the dystopian underwater city of Rapture. The game takes place eight years after the events of the original BioShock. Players assume the role of Subject Delta, a prototype Big Daddy, who is seeking to reunite with his Little Sister, Eleanor. Eleanor is the daughter of the main antagonist, Sofia Lamb, who has taken control of Rapture and is using the Little Sisters to achieve her vision of a collectivist society.