When Saffi and Oliver discover a magical antique pocket watch, they accidentally transport themselves back in time to 1940s London in the middle of the Blitz. There they unexpectedly meet their young grandfather William, who is working with the British government to crack enemy codes and invent a powerful time machine to help win the war.

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But when William is kidnapped by ruthless Nazi spies, Saffi and Oliver must spring into action. Racing against time, they have to rescue their grandfather, stop Nazi agents from altering the course of history and figure out how to get back home to the 21st century.

 

Aided only by their courage and wits, Saffi and Oliver embark on a thrilling journey through time. Outsmarting villains, decoding secret messages, sneaking through the wartime city, jumping trains - the resourceful siblings brave it all. But will their bravery be enough to thwart the Nazis' sinister plans and save the future as we know it?

Action, adventure, family ties and a race against time fuel this exciting tale. History buffs and time travel fans alike will speed through this fun page-turning story.