Napoleon's Starship is told through the eyes of Gavroche, a young revolutionist and artist. On Earth, she joined the protests against Napoleon's cruel rule. No longer being able to stand his tyranny, Gavroche stows away on Napoleon's Starship, determined to assassinate him. 

When she is caught by Napoleon's troops, Napoleon's Master of Artistic Propaganda attempts to force her to use her art for propaganda. Gavroche resists, eventually meeting the denizens of this new planet. A kinship is formed with these creatures that speak through scent and Gavroche devises a desperate plan to overthrow the galactic emperor!