Mars is controlled by the Chinese, who call their civilization the Celestial Empire. But for teenagers Gamine and Huang, it is anything but heavenly. Gamine was taken off the street by an aristocrat, schooled as a fine young lady - then abandoned at her patron's whim and forced to make her living as a grifter. Huang's army career is cut short by a bandit ambush. When the two meet, Gamine - 'Iron Jaw' - is the leader of a sham religious movement, and Huang, or 'Hummingbird,' is the bandits' chief tactician. They join forces to bring down the corrupt government that has determined their lives. Iron Jaw and Hummingbird offers a planet's worth of adventure!