Everywhen is when everything happens at the same time. In the year of 2077 a large count of the worlds population, 3 billion, suddenly disappears. Did they all go to a parallel reality? A 17 year old boy forces himself back from this reality, to try to save his 6 year old brother.

Fritz, now married and with a son, is desperate to escape from the domestic hell he now finds himself in. Lighting up a joint, he begins to dream about his eight other lives, hoping to find one that will provide a pleasant distraction. The drug-induced journeys he takes include spells as an astronaut, Hitler's psychiatrist, a courier travelling in hostile territory during a race war, and as a pupil of an Indian guru living in the sewers of New York.

While traveling through the desert for an appointment with a client, the businessman David Mann from California passes a slow and old tanker truck. The psychotic truck driver feels offended and chases David along the empty highway trying to kill him.