The Zapatista Army of National Liberation has been dissolved and the Mexican government seeks to terminate all members of the ethnic groups that formed it: the tzeltals and the tzotzils. Miguel Nazar, an officer of the Federal Bureau of Security, is sent to search the last survivors still living in the region. He visits the home of Ramon Marinez, a rural teacher who has ended up without students because of the extermination and who is hiding the town's last family of tzeltals.