Claude's father vanishes after inventing a time machine, and Claude and his best friend Carolien plunge into the past to find him. But their journey presents them with a set of frightening challenges when they arrive on the southern plantation where Carolien's ancestors are slaves. There, they confront one of the most horrific chapters in history as they try to help her great great great great grandmother escape. But messing with the past is a dangerous thing, and they quickly realize one wrong move may hurt countless people and fracture the very fabric of the universe.