Marc Holiday and the Travelers Ring

For five months chess and math whiz Marc Holiday has tried to uncover the secrets of his mother's Travelers ring with no success. Now, without any warning, they come tumbling out, but will they help him or lead him down a dark road to Earth's destruction. Only Dr. Jake Tam can help. Yet the Time Doctor has troubles of his own. The Traveler Hoth is out to capture him and stop the Prophecy of the Last Traveler from coming true and destroying the Arch of Time. With Earth's past under attack from a mysterious stranger, Marc and his friends Hannah Tidan and Larry Daniels team up with Dr. Jake and travel into the distant past to save the world. Will they succeed, or will they return to Seattle to face a changed and bleak present?