Jane is really a delightful but troubled American girl backpacking through Japan, when her raw street-fighting skills draw the attention of Oshima, Japanese karate champion, who recruits and trains her to struggle at the vicious, all-female, underground martial arts tournament referred as"The Kumite". After months of rigorous preparation, Jane is ready to face off against the most bizarre female fighters in the world, including Ling the Chinese apprentice of the nemesis of Oshima. But other nefarious forces lie at the shadows, and Jane and Ling might need to unite on a journey that will take them out of the gritty underworld of Hong Kong into the glitz of Macao, before deciding that is the greatest female fighter on Earth.