Amadeu Caronho
Vincent, a young Swiss, is upset by his meeting with the city of Lisbon. He will meet two persons: a prostitute of high flight and a great writer fallen and suicidal.
Irene is an agent for an insurance company. She is given the job of investigating the disappearance of an elderly librarian in a provincial town. During her investigations she meets a history teacher - Ricardo - who knew the librarian and is interested in local legends. Irene happens to hear about a very old medieval castle which, according to legend, has a secret entrance that opens mysteriously on Christmas night as the clock strikes twelve.
A young man from a high-bourgeois family, Henrique receives mysterious phone calls from a woman at the barracks where he is serving in the military, which attracts him to meetings without consequences.
