Douglas Quaid is haunted by a recurring dream about a journey to Mars. He hopes to find out more about this dream and buys a holiday at Rekall Inc. where they sell implanted memories. But something goes wrong with the memory implantation and he remembers being a secret agent fighting against the evil Mars administrator Cohaagen. Now the story really begins and it s a rollercoaster ride until the massive end of the movie.

A man awakes disheveled; impulsively, he skips work, heading instead to the shore. On this chilly February day, a woman in orange, hair dyed blue, chats him up: she's Clementine, he's Joel, shy and sad; by day's end, he likes her. The next night she takes him to the frozen Charles River. After, as he drops her off, she asks to sleep at his place, and she runs up to get her toothbrush. Strange things occur: their meeting was not entirely chance, they have a history neither remembers. Our seeing how the lacunae came to be and their discovery of the memory loss take the rest of the film.