 Like other games in the Neverwinter Nights series , Mask of the Betrayer takes place in the Forgotten Realms campaign setting . The story is a direct sequel to the plot of Neverwinter Nights 2 , set almost immediately following the events at the main game 's end . The main campaign is set in Rashemen near the kingdom of Thay , and the Red Wizards of Thay are a driving force behind the campaign story . 
