When the Searcher returns to Earth, Buck is immediately arrested on charges of high treason. He stands trial while his peers review a 500-year-old piece of evidence - a videotape from the 20th Century unearthed from the ruins of an Air Force base - which shows Buck working with treasonous military officers who brought about World War III. Facing the death penalty, Buck must prove his innocence, but he has no memory of his involvement with the events. He then begins using Dr. Goodfellow's repressed memory probe (which shows among other things, Rogers' meeting with the President of the United States in a secret base inside Mount Rushmore), hoping to find the truth of what really happened.
—Woodyanders