A middle-aged man meets a young woman who is waiting on a canal bridge for her lover's return.
Certain that "the right man" is crucial to her escaping the confines of the Italian village where she lives, Pina places an ad in the newspaper. She gets a response from Adolfo, who agrees to travel from his residence in Rome to visit her. As flashbacks shed light on both their pasts, suspense builds about how they will relate to one another.
Giacinto Rossi, a poor driver up to his neck in debt, is imprisoned for simulated crime. He finds himself in a cell with Tagliabue, an unscrupulous murderer; Sorcio, an elderly thief; and Papaleo, an honor-obsessed intellectual who murdered his fiancée's lover. Giacinto is forced by the three men to make a daring escape from prison.
