A journalist could marry the daughter of a tycoon, but prefers a relationship with a married woman. An attorney renounces her lover by greed. A soldier tries to approach a widow on a train. A German couple looking for adventure mistakingly aim for the wrong target, yet find love.

Noble, wise King Sardanapolo and his more soft and naive younger brother Prince Sammash get into a bitter feud over the affections of sweet and alluring innocent peasant girl Mirra. Meanwhile, the treacherous and ruthlessly ambitious General Arbace plots against both siblings.

A self-taught amateur detective who learned his trade from a book finds himself caught between two gangs in Milan, trying to recover a wooden leg full of drugs. He is accompanied by an unlikely trio: a deaf secretary, an undertaker and a monkey.

The film shows how Italy's historic national hero Giuseppe Garibaldi (embodied by Renzo Ricci) leads a military campaign known as Expedition of the Thousand in 1860 and conquers Sicily and Naples. When the Bourbon monarchy has left Southern Italy, he supports Victor Emmanuel II of Italy who achieves a lasting unification under the aegis the House of Savoy. Roberto Rossellini has said he was prouder of this film than of any other film he ever made.

Cathrine has been sentenced to the gas chamber but Police Lieutenant Sheridan does not believe she is guilty of the murder she has been accused of. He has twenty-four hours to prove her innocence.