Toussaint Louverture, champion of the Haitian Revolution, must defend the freedom of his people from the forces of Napoleon Bonaparte! In case it isn’t clear, Toussaint is the dude riding the T. rex and Napoleon is the one on the woolly mammoth.
In real history, although Napoleon never invaded Haiti himself, he did send a punitive force to capture Toussaint and enslave the Haitians all over again. The general leading this force, Charles Leclerc, did succeed in catching Toussaint and deporting him to the French Alps, but Haitian freedom fighters were nonetheless able to drive off the French over the course of a year.