A supply boat sails to a lonely desert island with food and necessities for the lighthouse keeper and his daughter. The crewmen bring the goods to the tower and see before them a strange mystery -- steaming food on the table and a broken, bloody window. There is no trace of the keeper and his kin. Drawn from a novel by Brazilian author Moacir C. Lopes, this haunting, lyrical film chronicles the events leading up to this strange occurrence via the lost girl Marcela's diary. She was 13-years old and but for her domineering father, the island's sparse wildlife, the sea and the wind, she was alone. Having spent most of her life there, Marcela is used to it, but lately, as her body begins changing, she feels a strange yearning to be off the island and to be with other people. Once her father promised to take her to the mainland, but being a hermit, he broke that promise. Marcela was never the same after that. In her diary she writes of the mysterious Saulo who one day became her lover. That Saulo is the wind itself only adds to the mystery which concludes in a tense and gripping sequence.