Plot

An ordinary family man finds his life turned upside down when strangers suddenly start seeing him in their dreams.

Nicolas Cage stars as Paul Matthews, a listless family man and tenured professor with an affinity for evolutionary biology and anxiety regarding his own anonymity. One day, he discovers he has begun to appear in other people's dreams at an exponential rate. As in life, his presence in these dreams is banal and non-intrusive - he's simply there, staring indifferently at the fantasies and nightmares of strangers. Nonetheless, he becomes an overnight celebrity, and is soon showered with the attention he has long been denied. But when Paul encounters a dreamer whose visions of him differ substantially from the norm, he finds himself grappling with the Faustian bargain of fame as his dream-selves start inexplicably becoming violent within their respective subconsciousnesses.—Studio

For reasons unknown, Paul Matthews, a self-absorbed college professor who wouldn't hurt a fly, appears in other people's dreams--his dull academic doppelgänger, to be precise. That's right; even perfect strangers, ignorant of the oneiric intruder's identity, suffer similar symptoms. As a result, the worldwide phenomenon thrusts the marvellous nobody into the limelight. At last, that should teach everyone a lesson; like it or not, the world will learn to love the innocuous boogeyman and appreciate his work. However, poor Paul never had the guts to follow through on his goals and ambitions--procrastination has always been his middle name. And as soon as the only thing that had made others respect Paul backfired, sheer terror replaced the fame that came so suddenly, ruining everything. After all, life is, and will always be, unfair. Now, Paul feels cancelled. But who was he trying to fool in the first place?—Nick Riganas

Sophie, a teenage girl, has a dream in which a man is raking leaves by a swimming pool. As Sophie starts floating up to the sky, she cries for help from this man whom she calls Dad. Her father, Paul Matthews, is a professor of evolutionary biology at a local university.

When Paul learns a former colleague is writing an article on a topic he had discussed with her many years earlier, he seeks to confront her but instead begs her for some recognition. Paul's journalist ex-girlfriend, Claire, spots him with his wife, Janet, and tells him he appears in her dreams. With his permission, she writes an article about the experience. Soon, hundreds of strangers come forward to recognize Paul from their dreams. While Paul enjoys the media coverage this brings, he is frustrated by his depiction in the dreams as passive and uninteresting. In impromptu interviews with some of his students, Paul learns that in the dreams, oftentimes calamity occurs or the dreamers ask for help, but Paul is passive or emotionless and does not intervene.

Paul's wife, Janet, asks why he does not appear in her dreams. She describes her fantasy: Paul rescues her while wearing the oversized suit worn by David Byrne in the 1984 concert film Stop Making Sense. Later that evening, a mentally ill man who has seen Paul in his dreams breaks into their house with a knife, raising concerns about the risks of his fame.

Paul meets with a public relations firm, hoping to get a book deal, but they attempt to convince him to advertise Sprite on social media. After a beautiful young assistant at the firm, Molly, tells him about her erotic dreams about him, he attempts to reenact them for her but suffers premature ejaculation and leaves, humiliated.

Paul is enraged to learn that the former colleague has published a high-profile paper on the subject he was thinking of writing his book about. His presence in people's dreams becomes violent and sadistic, and he becomes vilified. He is placed on leave after students refuse to attend his classes. Bystanders begin to notice Paul in public and are bothered by his presence, resulting in a brawl in a diner. After Janet's career is affected, she asks Paul to issue a public apology, but he angrily refuses.

After Paul has a nightmare in which he is hunted and killed by a version of himself wielding a crossbow, he releases a self-pitying apology video. Humiliated, Janet throws him out of the house. Paul forces his way into his daughter's school play, but accidentally injures a teacher in the process and is restrained. He becomes further vilified.

Sometime later, the dreams have stopped. Paul's dream experience led to the discovery of a shared subconsciousness, and dreams have become an advertising space through the use of technology. Janet is separated from Paul and is dating a co-worker. Paul travels to France for a book tour to promote his book Dream Scenario. He learns it has been re-titled Je sues ton caches ("I Am Your Nightmare") without his consent, that the book is pitifully thin in the translated volume, and that his signing event has been moved to the dingy basement of the bookstore. Nevertheless, fans line up for his signed copies. Paul uses dream-travel technology to attempt to enter one of Janet's dreams and rescue her while wearing the Byrne suit. As he floats away, much like how Sophie did in the very first dream, Paul declares that he wishes the dream were reality.