An aging wizard ventures into a sprawling underground labyrinth to rescue Mordamir, his former mentor, descending through layer after layer of death traps, riddles, and hostile creatures—from invisible phantoms and corrosive slimes to colossal arachnids and warring goblin and troll clans. Along his perilous journey, he forges an unlikely pact with the goblin king, receives support from the warrior Ulindor and a mysterious purveyor of magical wares, and experiences haunting visions during fitful rest that hint at a vanished age of benevolent dragons and the legendary city of Erinoch with its rumored springs of eternal life. As he climbs deeper into the dungeon's heart, the mythic echoes trapped in his dreams begin to take on tangible meaning, pulling him toward answers that lie at the very core of the abyss.