Carlos and Suely are a normal couple. He has some extramarital adventures and she's a standard housewife. During a Carnival, when he goes out wearing a vampire costume, Suely decides to follow a friend's advice and go for it. On Ash Wednesday, he finds her with an odalisk costume on and happier than usual.
Heitor and Matilde are two siblings who decide to murder their rich father in order to quickly inherit his wealth. They get the killing done, aided by Matilde's boyfriend Henrique, but after a while the three of them begin to recieve mysterious notes which suggest that their secret is in danger.