In Ravenna, Italy, Giuliana (Monica Vitti) is walking with her young son, Valerio, towards the petrochemical plant managed by her husband, Ugo. Passing workers who are on strike, Giuliana nervously and impulsively purchases a half-eaten sandwich from one of the workers. They are surrounded by strange industrial structures and debris that create inhuman images and sounds. Inside the plant, Ugo (Carlo Chionetti) is talking with a visiting business associate, Corrado Zeller (Richard Harris), who is looking to recruit workers for an industrial operation in Patagonia, Argentina. Ugo and Corrado converse comfortably in the noisy factory. Ugo tells Corrado that his wife, Giuliana, had a recent auto accident, and though she was physically unhurt, she has not been right mentally. That night in their apartment, Giuliana becomes highly agitated and fearful over a dream she had about sinking in quicksand. Ugo is unable to calm her or understand what she's experiencing.