The prosperous city-state of Llylgamyn once thrived under the watchful eye of its High Council, until they appointed the celebrated warrior Trebor as Overlord to consolidate power. Trebor's ambitions soon led him to pursue an ancient amulet of legendary potency, hidden within a forgotten temple—but his prize was intercepted by the sorcerer Werdna, an arch-rival who coveted the artifact for himself. Using the amulet's dark magic, Werdna vanished beneath the city and conjured a sprawling ten-level labyrinth, populating it with summoned monsters to serve as his fortress and sanctuary. Desperate to reclaim what he lost, Trebor slowly carved control over the upper reaches of the maze and eventually repurposed it as a trial ground for the kingdom's most promising warriors, offering glory and admission to his personal guard to those brave or skilled enough to descend into its depths and retrieve the stolen amulet. Now, after five years of preparation, a new band of adventurers stands ready to test their mettle against the darkness that lurks below.