Good documentaries attempt to break into shadowy corners of the underground, but Wheat Harvest not only hits the jackpot by unraveling a seedy hidden world, it also breaks some generalizations. It follows the story of Niu Hongmia, a Beijing prostitute, who lives a double life as a quiet family girl in the countryside, using her wages to help her severely sick father. The candid camera work spares little anonymity to the sex industry players, giving a unblocked view into something we all know exists, but few of us actually see. Take a look inside a world of sacrifices and strong, cognizant women when it screens at UofM on March 3. 7-9pm. University of Michigan, Angell Hall, Auditorium A. 734-764-4189, www.umich.edu