From the introduction: The adventuring party is hired by a local merchant (Delric Nightbreeze) to ambush a black market wagon being brought in by the Night Masks, a criminal organization from Berdusk who are expanding out this way. The party is encouraged to disguise themselves as the Zhentarim, the local criminals who aren’t too happy about the arrival of the Night Masks. Starting a war between the two groups and ridding the city of at least one of them is the hope. There’s extra gold for the party if they leave one Night Mask alive to spread the story. Their primary goal however is to acquire an enchanted crate and its contents for the merchant.