Let the Trial of the Greats begin! Deciding to face the shocking truth, El-Melloy II, along with his companions, goes to the Grave of Albion’s Spirit—a great labyrinth spread out beneath London. It was another world, surpassing even the imaginations of magicians who know arcane arts. At the same time, Raines will be present at the Trial on behalf of the second. A complex, interwoven drama of investigating the labyrinth with a conspiracy. And what secret is hidden behind the Hartless, who performs a ritual deep in the labyrinth?