The Monastery of Two Winds

From publisher blurb:

Restore Balance

As the war spreads to new nations, the heroes set out to the Monastery of Two Winds, whose leaders—two enigmatic brothers—can guide the way to retrieving the Torch of the Burning Sky, which will tip the balance of power. But two enemies threaten the order. From without, remnants of the army of Emperor Coaltongue besiege the mountain monastery. From within, one of the order’s own is kidnapping innocents for cruel biomantic experiments. Great danger and precious revelations await the heroes in their mission to the Monastery of Two Winds.

A 5E fantasy adventure for 9th-level characters.