After the evnets of all of the Playstaion that comes befoce this game, the heroes must team-up once more to save the world. In Bioshock 2, as Sofia Lamb struggles to reach a pocket of air, Eleanor swim in and hand her mother a small air tank to breathe from, allowing her to live. Useing too mhch air from that air tank, Sofia turns into a mermaid with gills.