It concerns Alice, a translator with an unexplained two-day gap in her memory that follows clues to a mysterious seaside town for answers, where the unfamiliar residents seem to recognize her as a different woman named Nicole.

Alice Cespi, a translator working for the Italian government, awakens to the phone ringing in her Rome apartment on what she believes is a Tuesday morning.

In the car, before dropping Mary off on the way to work, Alice reveals she has been having nightmares about a movie she saw many years ago called Footprints on the Moon where an astronaut was abandoned during a lunar mission (the clip shown at the beginning of the film).

Returning to her apartment, she notices several strange things, including a bloodstained dress in her closet she doesn't recall buying, a torn postcard from a hotel in the Turkish island town of Garma, and a single earring missing its partner.

The next day on the beach, she meets a fellow tourist, Mrs. Heim, who remarks on her likeness to Nicole, minus the latter's distinctive long red hair.

Deeper in the trees, Alice finds burned clothes, scattered government papers, and a stray dog playing with a long red wig.

Alice heads into town, where a hairdresser, a store clerk, and other proprietors testify to doing business with someone matching her description earlier that week under the name Nicole.

After several proprietors make reference to a specific order Nicole placed at a general store, Alice goes there and asks to buy the same item, which is revealed to be a pair of scissors.

Now convinced she spent the two missing days in Garma but unsure why, she has a mental breakdown fueled by visions of the film and runs into the woods, where she faints.

In the adjoining bathroom, she finds her missing earring and is surprised by Henry, who says he found her in the forest and took her back to his home in hopes of jogging her memory.

He then reveals they briefly met as teenagers, when Alice was visiting Garma with her family on a day trip, and they spent a single afternoon together at the mansion.

Henry theorizes the stress of her job as well as the increasing nightmares of the film caused her to have a brief dissociatve episode where she assumed a new identity of "Nicole", was convinced the characters from Footprints on the Moon were after her, and returned to a place that held a happy memory, Garma, where he encountered her on Tuesday.