A morphine-addicted billionaire, Isaac Flint, and his power-hungry partner, "Tiger" Waldron, are not sated with their vast wealth and plot world domination by controlling the world's oxygen supply through technological siphoning of the atmosphere. They'd sell the oxygen back, of course, for a premium, but make no mistake- they would cut off that oxygen for anyone who doesn't bow to them. In their way stands a socialist worker, Gabriel, who uncovers the plot and seeks to stop them. The billionaire's daughter, Catherine Flint, through a chance encounter with Gabriel, becomes entangled with the affair, too. Will plutocracy win out and enslave the human race, or will humanity throw off the shackles of those who would do so? (Summary by Louis Noyes)