Horror starring Billy Zane and Dennis Hopper. Dr. Taylor Briggs (Zane) is in Brazil to deliver a lecture on diseases that affect memory functions when he's called upon to consult on the condition of a man found close to death near the upper reaches of the Amazon. A scan indicates a curious anomaly - he has massive tumours in all the areas of the brain used for storing long-term memories. Investigating the man's personal effects in the hope of finding some clues, Briggs comes into contact with a strange orange powder found in the man's rucksack but thinks nothing of it. However, back at his hotel, he experiences an inexplicable event as the building is hit by a tremor and a tidal wave of water floods the room. He escapes from the hotel but back home in Boston, he is unable to shake the memory of the experience. Could it be possible that contact with the orange powder has somehow activated within Briggs the actual memories of an ancestor? And if so, what is his connection to the nightmare world of the predator whose evil work he witnesses through his visions?