This is the beginning of a series of posts giving a bit of an overview (but no spoilers) of Modules set in The World Of Greyhawk. I'll be using modules that I own, so I may not go in any particular order.
Introduction on the front cover:
It is time to put a stop to the marauders! For years the coastal towns have been burned and looted by the forces of evil. You and your fellow adventurers have been recruited to root out and destroy the source of these raids. But beware, hundreds of good men and women have been taken by the slavers and have never been seen or heard from again!
(Art by Jeff Dee; gotta love the bearded dwarf maiden)
Originally written as tournament rules for Gen Con XIII 1980. And was to be used with the AD&D rules, but I don't see a reason that this can't be played using all other editions (with a few minor tweaks, of course).
Map of the Sea of Gearnat area.
The players start out in the overrun city of Highport outside of a ruined temple. It was once a human city but is now infested with Orcs, Goblins, Gnolls, Kobolds and Ogres. Keep in mind that the people who hired you to destroy the slaver's operation also have loved ones who are enslaved, "Discretion is the better part of valor."
You make your way through underground complexes beneath the ruined temple, fighting monsters and freeing slaves. Over all it's a decent adventure that sets you up for 3 more adventures in the "A" series. This would be a perfect adventure to run on a games day or as a campaign that can later be used to as the backboard of other adventures.