Alterations from the book and original film adaptation are made, including an ending differing from both the novel and film in that the submarine commander chooses to die with his newfound love instead of scuttling the submarine beyond Australian territorial waters (as in the novel) or attempting to return with his crew to the United States (as in the earlier film). In this version, the Golden Gate Bridge has collapsed and the city shoreline is in ruins, indicating an adjacent nuclear detonation, as in the book but not the first film version. The film ends with the reunion of Towers and Moira while their implied suicides occurring offscreen, as did the original version of Moira in the first film. Unlike the first film, there is no final postmortem scene of deserted Melbourne streets, with the absence of human life depicted.