The Antius Thieves' Guild (2000)

From the PDF:

Welcome to the Dungeons & Dragons: The Movie adventure. This is an introductory product designed to be
used with the Dungeons & Dragons Adventure Game.

[...]

The Crimson Guard put a bounty on your heads,so you fled Sumdall. The only way to clear your names is to find the Rod of Red Dragon Control, shown to you by a mystic map. In order to gain access to the rod’s final resting place, you need the
Eye of the Dragon, a mystic gem held by the Antius thieves' guild. You reached Antius with Damodar and the Crimson Guard hot on your heels. The guildhall is a vast underground chamber carved from stone, from which radiate many large rooms. It’s a teeming hive of thievery. Underworld types including drunken thugs, crooked old gemcutters, lithe cat burglars, and smooth con artists are busy bickering, appraising, fighting, sleeping, jesting, playing cards, arguing, gambling,and gossiping. Ridley and Snails recognize some of them, famous for their nefarious deeds. When
you meet Xilus, master of the city’s thieves’ guild, he puts forward a challenge: If you can foil the Guild’s Great Maze, you can keep the Eye.