At first unable to capture him, but then cheated by Esposito, if he blurts out. Suspended from duty for the protests of Mr. Locuzzo, the agent Bottoni risk of losing their jobs if they fail to stop the thief within three months. Dressed civilian clothes and hid the incident to his family, goes in search of Esposito. Find his house and so he knows the family, trying to ingraziarsela with favors and offers of food. Esposito, however, no trace. Gradually the two families become friends, and between his brother's wife's "Thief" and the daughter of the "guard" is a sympathy.