In the year 2093, human consciousness has expanded to the point where man can now travel to the past using a technique called "mind-travelling." Artist Edward Bush returns from a nearly-three year mind-travel to find that his government has crumbled and society is now under the leadership a new regime. Given Bush's excellent ability to mind-travel, he is recruited by the regime to track down and assassinate a scientist whose ideas threaten to topple everything they've built.