Alfie Bloom is just an ordinary boy. Until he receives a letter summoning him to raven-like solicitor Caspian Bone's office.

Here, Alfie learns that he has inherited a castle. And through mysterious circumstances surrounding his birth, he has also been entrusted as the caretaker of a centuries-old magic.

Unfortunately for Alfie, dangerous forces are after this powerful magic.

With the help of his cousins Maddie and Robin, Artan the flying bearskin rug, and Ashford (a rather special butler), Alfie must keep the magic safe from terrifying adversaries and make sure the secrets of Hexbridge Castle stay secret for ever...