September, 1940. Walter Benjamin arrives in Portvendres with an US visa issued in Marseille through his friends T. Adorno and M. Horkheimer. He have to cross the Pyrenees border and travel through Spain to Lisbon, to embark to New York. He carries an important manuscript. Henny Gurland and his son Joseph goes with him in a long and tiring journey. They are guided by Lisa Fittko. When they arrive in Port Bou, the Francoist authorities prevent them from continuing their trip. They will be deported on the next day. Everything happens afterwards is confusing. Walter Benjamin dies in dark circumstances. After "El emisario" (2018), "Dirección única" is the second film of "The Fascism Trilogy" that will end with "Rock of Gibraltar"(2020).