Drugs, weapons, migrant labour, women - these are just a few of the many goods that effortlessly cross national borders in this globalized age, often without the knowledge or permission of the nations concerned. How is this remarkable criminal feat managed? From gun runners in the Ukraine, to money launderers in Dubai, cyber criminals in Brazil, racketeers in Japan, and the booming marijuana industry in western Canada, McMafia builds a breathtaking picture of a secret and bloody business.