Mario Ilari, a young unemployed worker, is unjustly accused of killing a girl he knows of him. Once arrested, he manages to escape and hide in the house of his partner Gina, but ends up in prison again. The lawyer Roberto Marini agrees to take his defense after being contacted by Luisa, a friend of Gina, convinced that the trial will give him the opportunity to assert himself. The situation, however, is complicated by the fact that Calì, a homeless man, says he saw Ilari at the scene of the crime. Ilari confesses that he met Greta through a female friend, who should have facilitated his expatriation. When the lawyer Marini accuses Calì of perjury, he kills himself. The situation is resolved when the body of Greta is found, killed by the real culprit after being kidnapped. Ilari is freed and Marini and Luisa confess their mutual love.[2]
