The "forgotten space" of Allan Sekula and Noel Burch's essay film is the sea, the oceans through which 90% of the world's cargo now passes. At the heart of this space is the container box, which, since its invention in the 1950s, has become one of the most important mechanisms for the global spread of capitalism. The film follows the container box along the international supply chain, from ships to barges, trains, and trucks, mapping the byzantine networks that connect producers to consumers.