Reportero follows a veteran reporter and his colleagues at ZETA, a Tijuana-based muckraking weekly, as they stubbornly ply their trade in what has become one of the deadliest places in the world to be a journalist. In Mexico, more than 40 journalists have been murdered or have gone missing since December 2006, when President Felipe Calderón Hinojosa came to power and launched a government offensive against the country's powerful drug cartels and organized crime groups.