Back on solid ground Dirian and Morrow have started a new life. They have gained respect in surviving their deadly adventure at sea, found a place to call their own and, most importantly, won their freedom; but the presence of the Octagon is ever looming. When the powerful, imperialistic Airallotha try new means to reach the centre and harness its dangerous magic, other factions scramble to win the race. Dirian is reluctantly roped into returning to the Octagon's influence, acting as a guide through Cavern, the world Below. Faced with reminders of a past he wants to leave behind, the crimes of his people and the environment where he still feels most at home, Dirian continues to fight, learn and forge a new path. In a magical vortex where eight seems to be the fated number, maybe it's a good thing that they are only seven... Come along on an adventure deep under ground, where ambient magic has made the creatures grow strange, rivers flow backwards, and everyone seems to want to be there but Dirian.