In early 1990s Spain, eleven-year-old Celia lives with her mother and studies at a convent school in Zaragoza. When Brisa, a confident new classmate from Barcelona, arrives, Celia is drawn into a world that challenges the strict religious teachings and sheltered life she has known. Their friendship pushes her to confront hidden truths at home and the uncertainties of adolescence, leading her to explore questions of identity, independence, and belonging.

A tribute to a fascinating film shot by Alfred Hitchcock in 1958, starring James Stewart and Kim Novak, and to the city of San Francisco, California, where the magic was created; but also a challenge: how to pay homage to a masterpiece without using its footage; how to do it simply by gathering images from various sources, all of them haunted by the curse of a mysterious green fog that seems to cause irrepressible vertigo…