Defender of the realm

"Alfie thought he knew his destiny. He didnt know the half of it. Fourteen-year-old heir to the throne Alfie didnt expect to be King so soon. He DEFINITELY did not expect to be DEFENDER OF THE REALM a legendary superhero fighting a secret centuries-long battle to protect the nation from monsters and super-villains. An ordinary girl Hayley Hicks finds herself fighting alongside Alfie in a desperate struggle to stop a fearsome new enemy the Black Dragon."