Fifteen-year-old Sarah is so resentful of her baby brother Toby that she wishes he will just disappear. Her dream becomes reality when goblins kidnap the boy--but Sarah unexpectedly finds herself horrified by the loss. In order to retrieve him, she has to reach the center of the fantastical labyrinth where the wicked Goblin King has imprisoned the lad. But the task is easier said than done, for the maze is filled with strange creatures and mind-bending puzzles that confuse the girl.