Ona lives peacefully with her teenage son in a quiet village of the Pyrenees where she works as a gardener, although her big dream is to pilot a tourist plane. One day, everything changes for Ona when some foreigners, a group of henchmen, arrive in the village and bring to light certain dark secrets of her life which she had forgotten about. She will then be compelled to face those secrets from the past once and for all.
Alice Gould, a private investigator, pretends to be mentally ill in order to enter a psychiatric hospital and gather evidence for the case she is working on: the death of a patient in unclear circumstances.
An elder lighthouse keeper takes care of what has been his home for years. Old and secluded from society, he's disturbed by mysterious bottled letters. These and an unexpected malfunction make him doubt his job, his life and his existence.