Life is as unchanging as ever in the village: the sun sets between memories. The arrival of a young outsider changes everything. The old are offered a new gift and they accept it. The dreams awaken an old song which pulses through the village. 'With Fate driving the cart of everything along the road of nothing.'
Every year, four ex-soldiers who call themselves "Os Imortais" ("The Immortals"), get together with four women to celebrate their war deeds and remember the old days, back in the war. On the summer of 1985, tired of their monotonous lives, they decide to rob a bank. Joaquim Malarranha, a chief inspector from the local police force who is about to retire, crosses their path and chooses to spend his last days of duty trying to solve the robbery. But as he carries on with his investigation, he discovers more than he could have ever imagined...
Neves and his wife Celia are the owners and managers of the 'Little Star Pension', a familiar hotel that caters to bourgeois family and would-be actors, instead of the ill-reputed 'Good-Night Pension' (just across the narrow street), where gigolos, whores, and criminals of all sorts may go for a quick encounter. However, not all is well among the ten residents of 'Little Star Pension': each dialogue line from every hotel guest is evidence that he, or her, has a reason (actually, more than one) to hate Neves - to the point of wishing him dead. Carelessness (or devious intention) by one party will provide the means; another, will create the propitious moment; yet another, and then the rest of them will create the festive New Year's Eve occasion - to do with Neves forever! Obviously, only the famous world private-eye Hércules Pirôt can solve the crime... for which he is called by phone, even before the deed is done.
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.
