Casper Tock And The Everdark Wings The Unmapped Chronicles, Book 1.

From bestselling author Abi Elphinstone comes a wondrous new series about four secret unmapped kingdoms hidden in our own world! Casper Tock hates risks and is allergic to adventures. So it comes as a nasty shock to him one day when he hides from bullies in an ancient grandfather clock-and ends up finding an entire world inside. Casper discovers that this sky kingdom of Rumblestar is one of the four Unmapped Kingdoms in charge of controlling...