Adriana, an orphan who has been raised in a well off family, becomes pregnant after being seduced by a man. Outraged, Mr. Bento kicks her our of home. What he doesn't realize is that her seducer is his own son, Raul, a brilliant law student.

Caleidoscope of documentary-like scenes and re-enacted episodes of a day in the life of a large port town – Lisbon, from the old district around Saint George's Castle down to the docks and the 'Sagres' on the Tagus river, to the new commercial districts.