In BioShock 2, welcome back to Rapture. Paradise reborn.
Deep within the ruined undersea city of Rapture, your beloved Little Sister, Eleanor, awaits your return. As her Big Daddy, you protected her from a world of insanely selfish adults, now you must shield her again from those who demand that everything must be shared.
Ten years after the events of BioShock, Rapture has fallen under the control of a collectivist cult who plan to transform Eleanor into a genetically-engineered messiah, who will put an end to individuality forever. To save her, you must deploy a unique combination of shooting, role-play and stealth as you rampage through Rapture's leaking halls to confront her captors.
Whether you choose to forgive those who threaten Eleanor or wreak vengeance upon them, remember, she is always watching and will follow your example.