Six great heroes, the Toa Metru, search for the power to awaken their sleeping people, the Matoran. They have entered the deadly Maze of Shadows - an underground labyrinth teeming with unfriendly Rahi, full of traps and puzzles. Captured by the vicious Karzhahni, the Toa Metru are forced on a quest to the very heart of the Maze of Shadows.