The Saga of the Elder People continues to unfold as Lauren and the twins travel back in time to the Ice Age with her ever-curious archaeologist father. The puzzle of the mysterious "lady" seen by Lexi in "Goldenwing" is finally solved as they find out more about the ancient, terrifying menace that forced her people to flee their Homeworld, and as well, they are threatened by new ruthless enemies that are looking to find a way to steal the riches of Earth in the present day. Lauren is faced with choices that could save or destroy two worlds.