The document reimagines the story of Mario Bros. in a future where a massive moon-based infrastructure called the "Superstructure" has been built. Mario and Luigi work as plumbers in the Superstructure's vast drainage system. They become embroiled in a rebellion against the upper classes and go on the run. They encounter strange new animals, including Yoshi, and work to stop Bowser's plan to destroy the Superstructure's energy system, which would endanger all its inhabitants. In the end, both Mario and Bowser sacrifice themselves to stop a flood and save the Superstructure, while Yoshi also gives his life to help them save the city.