Harold's checked cap, blown from his head by a freakish wind, gets him into trouble. First he comes into conflict with the police as a highwayman, then the cap serves to identify him as a housebreaker and lands him in jail, while the innocent cause of his trouble becomes his cellmate for another reason. Eventually a distracted wife rescues both her husband and Harold from the clutches of the law, the cap this time aiding him to regain his freedom.