An illegal bar in 1928. The grand opening of the Roman Collosseum. A British attack on Boston in 1776 that wasn't supposed to happen. Doctor John Campbell, an archaeology professor at a community college, has led an ordinary life, a boring life, until the purchase of an old desk at a local flea market turns out to be an extraordinary find. A desk which once belonged to one of the most brilliant and frightening minds in the history of science. Hidden inside is a device that no one except the long dead scientist has ever seen. This discovery sparks off a chain of events that sends Campbell on an amazing adventure that spans centuries, but Campbell is not alone on this journey. What starts off as an exciting adventure for the professor quickly becomes a frantic chase that could have dire effects on time itself...