France, 1890. Inventor Louis Le Prince vanishes under mysterious circumstances right after he created a device that, five years later, the Lumière Brothers will call The Cinematographer. What if they had stolen Le Prince’s idea and wacked him afterwards? The mystery remains for more than a century, until Luigi Cozzi picks up a strange book called “The Roaming Universe” in the horror museum of his pal Dario Argento. The origin of this enigmatic book troubles him. This particular science-fiction novel would have materialized during a spiritual session in modern day Rome. At the session, an old woman revealed that the key to all these mysteries comes from 1895, a time during which the Lumière Brothers had denied lending their camera to Georges Méliès for an obscure movie called "A Trip to the moon". Not only does this film actually exist, but it raises a more intriguing question. Is our world the only one, or are there parallel universes ?

During an analytic session, a psychologist recommends that one of her patients be admitted to a specialist clinic, but this decision unleashes the mysterious individual's latent madness. Abandonment is the key to his delusion, which will lead him to kill once again, as he had done in the past with his first, lost love. So, after disposing of the analyst's body, he decides to continue the "therapy" alone with the aid of a small video camera, recording his emotional states in a hallucinatory crescendo.

Documentary on the films of Dario Argento from his debut "The Bird with the Crystal Plumage" up until "The Phantom of the Opera".