Inspired in the Play "Auto da Barca do Inferno" by Gil Vicente, the only Portuguese playwright recognized in the universal history of theater, the story of "When The Angel And The Devil Cooperate" talks about a bet: if the world ended, where would most of the humans end up? In Heaven? Or in Hell? On Earth, the Angel and the Devil come across with the story of a father, Parvo, who blames his daughter's death on Onzeneiro. While Parvo looks to get his revenge on Onzeneiro, this one tries to get rid of the murder charges by paying of the judge. They both gather with their accomplices at the same place, a brothel, without knowing about each other's presence. Here alliances are formed and broken with the help of peculiar friendships, represented by the characters of "Auto da Barca do Inferno".

Luís hates Christmas. In the hospital where she is a doctor, she always offers herself to work for 24 hours in the emergency room on the 24th and 25th of December. When everything gets ready to be another bitter and solitary Christmas, a homeless is taken to the emergency room apparently with a pneumonia, despite refusing treatment. When Luís intervenes, she ends up recognising his father in the homeless man, with whom she cut relations circa 10 years ago.

Mena lives alone with her daughter Clara. Today is Clara’s seventh birthday. Despite her limited financial resources, Mena still manages to organise a birthday party. But after a phone call from her mother, she becomes distraught and anxious.

Inês is a teenager from a wealthy family. However, after classes, he participates in risky sexual games, compulsively uses the internet and attends the nightlife of Lisbon, entering a spiral of total destruction.

One night, the phone rings in a traditional Portuguese snack bar from the country side. The Spanish Civil Guard is looking for Kunta. He isn't there and till he arrives people speculate about those phone calls and about who is that man. His he a thief? A terrorist?