After being rejected by the Confederate military, not realizing it was due to his crucial civilian role, an engineer must single-handedly recapture his beloved locomotive after it is seized by Union spies and return it through enemy lines.
In a futuristic city sharply divided between the working class and the city planners, the son of the city's mastermind falls in love with a working-class prophet who predicts the coming of a savior to mediate their differences.