Ofelia is the daughter of photographer Miguel and of deceased circus artist Lea. When her father is hospitalised with a nervous breakdown, she decides to find out the reason and in doing so discovers the truth about the relationship between her parents and the true fate of her mother.
The film is inspired by the Mário de Sá-Carneiro short story, where the narration is made by Professor Antena's assistant who walks by his side when he is run over in a perhaps enigmatic way.