Twelve-year-old Tom Friday was never meant to be a museum-guarding, artefact-finding, super-brave explorer. But he gets embroiled in an adventure with twelve-year-old Lisha and her aunt, who is a special agent working for the Natural History Museum to protect and retrieve powerful mythical objects.

The Questers Agency run a network of international agents tasked with locating and safeguarding treasures from around the world. And Lisha is determined to be the youngest ever agent, but first she’ll need to prove her worth. That’s where Tom comes in. Tom is a super-recognizer, someone with the ability to pick out people from a crowd after barely glimpsing them for a moment. Together Lisha is sure they can solve a complex and intriguing quest: to find the key to the mythical Box of Locks, before it falls into the wrong hands.

Faced with a bunch of complicated cyphers and coded clues, the new friends must learn to trust each other in order to beat the forces of darkness and save the world from potential apocalypse.