It's 1825 and a series of events are underway that will change the lives of the Brady family for ever. Fast forward to the twenty-first century and Laura the Zecrof Guardian and her friends are exploring the sights and sounds of the Amberley Working Museum. But that is all about to change.

When Philip appears to Laura in the museum and tells her that her help is needed in 1830, she knows that she must once again use the power of the Zecrof locket to travel back to the past with her brave companions where they will face some of their most difficult challenges yet.
In the blink of an eye, the spirit sleuths are embarking on another action-packed adventure in nineteenth-century England. In the midst of the grime and dust of the Industrial Revolution, they must journey to protect Estelle Brady from evil forces that seek to harm her.

The gang must face a scrap-metal mob, fight the evil Upsilon in all his guises, elude ghost monks and much, much more - all the while trying to find out who wants to harm Estelle, the young girl ahead of her time trying to initiate change for the people of her village. Will the spirit sleuths discover who is behind the carnage in time? Or will Estelle be lost to them for ever?