In his misguided attempts to harness the power of technology, the children's erstwhile mentor Wuchiwark has unleashed a blight across the Underworld, causing the plants and animals to mutate into fearsome beasts. Only the legendary Twin Blades of Doom can undo the curse, so off the children are sent on yet another thrilling adventure! However, firmly believing that being a hero should be a once-in-a-lifetime experience, and not a permanent job, Julian hatches a daring plot which, if successful, will resolve the Underworld's problems once and for all. This third book in the Prophecy of the Underworld series continues to serve up much fun and laughter about adventures, heroes and the crazy world of publishing!