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Gary (Martin Freeman), a musician, is trapped in an unhappy relationship with his live-in lover, Dora (Gwyneth Paltrow). He becomes enthralled with a beautiful seductress (Penélope Cruz) who enters his dreams, and tries to control his dream-state so he can spend more and more time with her. When Gary sees his mystery woman's face on a bus billboard, he discovers she is real, and fate brings him an opportunity to meet her. Wikipedia