Newly retired workaholic Roy Washburn is not ready for a life of leisure. On a trip to the mall with his wife, he finds a small metal cylinder with odd markings. One nudge of the cylinder's triangle-shaped pointer and Roy finds himself embarking on an exciting new adventure in the Time Stream. There he meets The Traveler, a tall, gangly being who shows Roy how to use the cylinder to visit other civilizations that co-exist on "his" Earth, each occupying a different, thin Time Slice. The Traveler solicits Roy's help in recovering an object invented by his murdered father and beyond his own reach. Roy is his last hope. At first it seems that the Traveler's wish might be easily granted. But after Roy's wife Emily becomes ill and his daughter's long-held resentments rise to the surface, he can no longer "travel" at a moment's notice. He also discovers the very real physical and mental risks involved in roaming the Time Stream. Despite the dangers, Roy is determined to help the Traveler. But he can't do it alone. Fortunately he has a loving wife and a core group of loyal friends. But first he must convince them-and his daughter-that he isn't crazy ...