Ernesto is a young Italian Jew of the early 1900s who works in his uncle's factory in Trieste. Not entirely secure with his sexual orientation, Ernesto enters into an affair with one of his uncle's employees.
Laura and Fabrizio have been meeting every summer in the forest by her parent's summer home. Fabrizio is a solitary boy with only his dog for company; Laura a sweet but unconfident child. This summer new aspects enter into their story as both are growing up. Laura is falling in love with Fabrizio, while he displays a new sexual awareness of her masked by his malice. Things develop further when they meet Sylvia who, unlike the innocent Laura, is confident and assertive. Fabrizio develops a fascination with her, eventually bribing Laura to fetch her to the forest to join them in play.
A group of female aliens abduct men by sleeping with them.