A famed but quarrelsome professor proposes an audacious plan to reach Mars by exploiting an electrical interaction between planets and adapting a reinforced airship; his three companions — an engineer, a naval lieutenant, and a physician — scrutinize theoretical calculations, ship design, and practical risks such as extreme cold and breathable atmosphere. The narrative alternates technical exposition of propulsion and celestial mechanics with heated debate and practical preparation, exploring scientific ambition, the demand for empirical proof, and the tension between daring hypothesis and the real-world obstacles that must be overcome for the proposed voyage.