Nyelv: Olasz - Felirat: Angol In Ravenna, Italy, Giuliana 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 is talking with a visiting business associate, Corrado Zeller, 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.
Corrado visits her at an empty shop she's planning to open and talks about his life and the restless nature of his existence. She accompanies him to Ferrara on one of his worker recruitment drives, and she indirectly reveals details about her mental state. She tells him that when she was in the hospital, she met a young woman patient who was advised by her doctors to find someone or something to love. She speaks of the young woman feeling like there was "no ground beneath her, like she was sliding down a slope, sinking, always on the verge of drowning." They travel to a radio observatory in Medicina, where Corrado hopes to recruit a top worker. Surrounded by cold industrial architecture, Giuliana seems lost in her loneliness and isolation.
The following weekend, Giuliana, Ugo, and Corrado are walking beside a polluted estuary when they meet up with another couple, Max and Linda, and together they drive to a small riverside shack at Porto Corsini where they meet Emilia. They spend time in the shack engaged in trivial small talk filled with jokes, role-playing, and sexual innuendo. Giuliana seems to find temporary solace in these mindless distractions. A mysterious ship docks directly outside their shack. During their conversations, Corrado and Giuliana have grown closer, and he shows interest and sympathy for her. When a doctor arrives to board the ship, Giuliana, seeing that the ship is now quarantined due to an infectious disease, rushes off in a state of panic.
Sometime later, Ugo leaves on a business trip, and Giuliana spends more time with Corrado, revealing more about her anxieties. One day, her son becomes suddenly paralyzed from the waist down. Fearing he has contracted polio, Giuliana tries to comfort him with a story about a young girl who lives on an island and swims off a beach at an isolated cove. The girl is at home with her surroundings, but after a mysterious sailing ship approaches offshore, all the rocks of the cove seem to come alive and sing to her in one voice. Soon after, Giuliana discovers to her shock that Valerio was only pretending to be paralyzed. Unable to imagine why her son would do such a cruel thing, Guiliana's sense of loneliness and isolation returns.
Desperate to end her inner turmoil, Giuliana goes to Corrado's room. Giuliana is distraught and begins to disrobe. Initially resisting Corrado's advances, the two make love in his bed. The intimacy, however, does little to relieve Giuliana's sense of isolation. Corrado drives Giuliana to her empty shop, where she remarks that there is something "awful" about reality. Later, Giuliana wanders to a dockside ship where she meets a foreign sailor and asks if the ship takes passengers. She tries to communicate her feelings to him, but he cannot understand her words. Acknowledging the reality of her isolation, she says "We are all separate."
In the daylight, Giuliana is walking with her son near her husband's plant. Valerio notices a nearby smokestack emitting poisonous yellow smoke and wonders if birds are being killed by the toxic emissions. Giuliana tells him that the birds have learned not to fly near the poisonous yellow smoke.