It's Leo's job as the Guardian's apprentice to protect the village from the monsters that lurk in the surrounding forest. Whenever a monster gets too close to the village walls Leo must venture out, using his magical map to first find the monster and then do battle with it. In this book, Leo must track down the ghostly Frightmare-a powerful monster that haunts the abandoned ruins, breathing deadly blue fire at any intruder.

Leo Wilder must protect his village from the monsters that lurk in the surrounding forest. His job is top secret, but that secret has come under threat. To protect his world, Leo must battle with the ghostly Frightmare-a powerful monster that haunts the abandoned ruins, breathing deadly blue fire at any intruder.

When Leo opens his assignment envelope on his ninth birthday two words stare back at him: TOP SECRET. But before he has time to ask any questions, he's whisked away beyond the village wall to meet his new boss, the Guardian. As the Guardian's apprentice, he must protect his village from the monsters that lurk in the surrounding forest. Armed with a slingshot of magical stones and a strange map, Leo is given his first mission-to do battle with an angry Armoured Goretusk.