Warrens of the Great Goblin Chief

From the rear cover:

Goblins have returned to the area of Westgate, seeking an ancient magical item constructed for their foul kind. In their search, the goblins attack an imperial convoy secretly disguised as a merchant’s wagon. The knowledge that goblins are near must be kept quiet from the public, thus a small band of adventurers is required to seek out the creatures and the stolen magic item, deep inside the warrens of the great goblin chief!

But the adventure does not end there...