Antonio Spagara, a young Sicilian worker, has been assigned by the Mafia to murder a nobleman, Marquis Macri. But at the last minute Antonio reneges on his commitment and instead of killing the father, he flees to Palermo with Grazia, his daughter. Life is not a bed of roses in the Sicilian capital, as the young man must impose himself face to his father and his despotic sister Dorotea. To make matters worse, the Mafia is not going to tolerate Antonio's desertion...