It's a Christmas story set in the Mirrorworld reflection of the city of London - Londra - a fairy-tale-like story of magic and discovery by one young, orphaned girl.

In a land of elves, mermaids and trolls, true magic is where you least expect it... In the snow-covered city of Londra, young Tabetha survives by finding treasures in the mudbanks of the river Themse.

On Christmas Eve, a sinister stranger asks her to keep her eyes open for a priceless, long-lost magical object: the Glass of Lead and Gold. As word of the Glass spreads across the city, Tabetha finds herself with some unlikely companions, not least a one-armed girl and a rather impressive soup chef.

But will Tabetha discover that there are even greater fortunes to be found than the magical Glass?