When Last We Left Our Heroes...

Filibert Fairbarn the Halfling, Ambiorix the Fighter, and Indis the Most Metal Elf Ever (plus assorted henchpersons) had stopped by Frostwyk to visit Ambiorix's family home whilst en route to the fabled Frozen City of the north.  (The city being famous for its supposed hoard of strangely-marked gold guarded by white apes.)

Maeglynn Icewine, half-sister of Ambiorix

At Icewall, Rethel "The Boar" Icewine's estate, the fighter found his father had become older and frailer, though the Lord was happy to see that his bastard son had found and brought home his daughter, the missing Maeglynn. (She had been charmed and then kidnapped by the vampire Polidori.)

After a short stay, the party continued north to the Treacherous Stair leading to the great glacier and the City it supposedly encapsulates.  In the narrow canyon, they were set upon by harpies but destroyed the beasts without loss.

After several days' journey, the group now finds itself at the glacier's edge, the enormous wall of ice stretching for what seems like miles above their heads.  Here at the top of the Stair, three tunnels of man-height burrow into the ice.  Bones litter their entrances and a freezing cold breeze wafts from inside, the air smelling of steel and death...