"Run!" the reverend shouted. "Run for your lives!" In that split second, life for Matt Booker and his best friend, Jack Davis, turned into chaos. Boy, were they in a lot of trouble! It all started when they were plaing catch in the yard at Whit's End. Jack missed a pass and, while searching the woods for the ball, stumbled upon a trap door. If only Matt and Jack had obeyed the sign that warned, "Keep Out." But they didn't. And then they got carried away. Literally. Climbing aboard The Imagination Station, the two friends were propelled back to the days before the Civil War - not a good place to be if, like Matt, you're black. After interrupting a meeting with the Reverend Andres, who was helping slaves escape to freedom along the Underground Railroad, well�things just went from bad to worse! Matt was captured by slave hunters, leaving Jack and the revered to rescue him. But would they find him�and in time?