Globalisation has gone to great lengths to coerce many countries around the world to open 'free trade zones' for Western markets, where businesses receive special tax benefits and other rewards for operating factories and exploiting cheap labour. The argument, as is always cited, is for growth of the global economy. Free Trade Slaves sets out to examine these ideas by looking at the realities of such practice. Told from the perspective of the workers in Sri Lanka, El Salvador, Mexico and Morocco; the film exposes systemic human rights abuses, harrowing environmental destruction, birth defects and other long lasting health problems and social issues. The filmmakers suggest that workers around the world need to assert the right to unionise and organise together to demand and retain decent conditions, and that consumers should do their part by boycotting companies that continue to abuse people and the environment.