In Neverwinter Nights 2: Mask of the Betrayer, players are transported back to the Forgotten Realms shortly after the events detailed in the original Neverwinter Nights 2. Following the climactic battle against the King of Shadows, the player awakens alone and stranded deep beneath the earth. Surrounded by a horde of evil spirits, the player embarks on an epic adventure that reveals his true destiny.
Neverwinter Nights 2: Mask of the Betrayer will feature a new campaign, epic levels, dozens of new feats and spells, new races, base classes and prestige classes. New companions, weapons, armor and crafting options, as well as hordes of new monsters and enhanced modding tools, will be also included in this expansion.