Once Upon a Time in China

China's been infected with a plague known as the Western world, and Wong Fei-hung (Jet Li) refuses to stand by and watch as his country is decimated by the foreign forces. A martial arts expert, Wong collides with the foreigners, their influence and, especially, their firearms.
Leading his misfit militia, Wong is determined to stop the immoral slave trade that serves the California gold fields. When his favorite aunt is kidnapped to be sold as a prostitute, Wong must battle his countrymen and the superior firepower of the slave traders, all for the very soul of traditional China. (official distributor synopsis)