For Mark David and their friends, the wide side yard of the boarded up Drezden mansion, was one of the only safe places to play a game of baseball or football. For twelve year olds living in an industrial and row home inner-city neighborhood, it was a place they would gather almost every Saturday. This particular Saturday would be different from all others. By chance, their baseball rolled against the wall and stopped near a basement window. Mark seeing the window partially open, decided to climb in. After coaxing his friend David to go in with him, they find while exploring, a large vestibule mirror with a bench seat. To their surprise, they're able to pass through the mirror and get a glimpse of the past. It becomes the explorers delight, filled with new friends, fun and adventures.