In this final book in the Weaverworld Trilogy

14-year-old Jack Fisher is summoned back to Weaverworld on an urgent mission: he must help Rainbow Mudrake free her fatherthe famous Bowmakerfrom the dungeon at Stranglespit Labyrinth. Once there, however, he finds himself enmeshed in a life-or-death struggle of epic proportions.

Hungry for power beyond imagining, the evil Grimsnipe is planning to breach the barrier between Weaverworld and the Realworld, a feat he means to achieve with the help of Jack's best friend, Simon Goldberg. He creates a fantastical amusement park to lure gullible Realies into paying huge sums of money for the adventure of a lifetimetheir last.

Jack is not alone on this voyage. His younger sister Jillian, and their dog, Hairy Spotter, are along for the ride, and friendsold, new, and unexpectedbecome essential to their survival. Among them is an eccentric Timekeeper who helps Jack confront the hardest decision of his lifeand the greatest sacrificein order to save Weaverworld, and the girl he loves.