The Bear King's Wife

From publisher blurb:

5th Edition Mini-Dungeon for four characters of level 15

The redoubtable Sir Locryn Ashby is missing. So are the rest of his hunting party.
They were due to arrive back at Merriweather Lodge three days ago, there to enjoy a hero’s feast and (according to the gnomish nobleman’s itinerary) regale all and sundry with tales of daring exploits in the deep wood. It seems that the deep wood had other plans.

Now Ashby’s remaining retainers are making noises about a rescue mission, hinting that any heroes willing to make the trek to their master’s basecamp could expect a worthy reward.