Young Oliver Diplexito and his family's trusted valet, Mr. Scant, live a comfortable life, thwarting robberies and getting home in time for tea. But when arch anarchist Aurelian Binns returns, Oliver and his mentor soon feel the heat. After Aurelian steals a priceless diamond from the Tower of London, it's up to Diplexito and Scant to defend king and country. And when an old ally of Mr. Scant's emerges-only to side with Binns-the betrayal sends the heroes spinning. So begins a chase that will take Oliver and Mr. Scant all around the globe. As danger draws nearer and secrets emerge, Oliver starts to wonder-who's truly in the wrong?