"A creeping winter is slowly taking over everything it touches, and the source of its chilling power
is a powerful creature known as the Wretched Wraith. To stop the never-ending winter in its icy
tracks, a noble hero must take on new missions in the lands trapped below zero. It won’t just be
wintry winds that seek to throw the hero from their path to destroy the Wretched Wraith, but new
enemies such as the Illusioner and Iceologer will join the brawl! As you hunt down the source of
corruption, you’ll discover new armour, weapons, and artifacts below the snow and sleet. Stay
cool and keep a steady hand, for the frost is unforgiving."

More details on the official game page of Minecraft Dungeons DLC 2 ...