From publisher blurb:
Threshold. The northernmost town in the Duchy?and your last stop before your adventures begin. Threshold, the gateway to mysterious castles, lost temples, deadly caves and caverns. You have heard the stories and legends now you wish to see for yourself.
This product provides a complete campaign adventure that will take beginning characters from 1st all the way to 3rd level and possibly beyond, drawn from the first nine modules of the B-series adventures.