Once every ten years, the exhibits in the museum come alive! But this time there is a great danger to the museum and to history itself. A mad scientist is looking for the future stone, an artefact which will allow him to travel back in time and change the course of history. But no-one is really sure what the future stone is. Join early convict James, Gold-Rush wife Elizabeth, and Egyptian Queen Nefertiti and their friends as they work to stop the mad scientist and save history as we know it.