Aunt Virginia is a 70-year-old woman who has no children and has never been married, and ends up being convinced by her sisters, Vanda and Valquíria, to move to another city in order to take care of her parents. Taking place in just one day, the film follows Virginia's preparation to receive the sisters who are coming to her house to celebrate Christmas.

In the shimmering heat of Brazil, 13-year-old Irene discovers a dark secret her father's been hiding: he has another family and even another daughter with the same name.