From the introduction:
The PCs at this moment are wondering into Baldur’s Gate after finishing a long adventure. On them they have a spellbook from a deceased companion. In this spellbook are wild magic spells, and as none of the mages are wild mages, they are planning on selling the book for a bit of profit. What they don’t know is that there are numerous mages that want to get their hands on this wild magic. In my party, the priest of Tymora has the book in his possession, and is holding onto it because of explicit instructions from Tymora.
Two Time, a wicked sorceress, wants this book for herself, but at the moment she knows nothing of it. She is not a wild mage herself, but is intrigued when she hears word of it. She has a number of feelers in the marketplace and other major gathering points in the city, letting her know of what is going on. Two Time, and her lover Devan, are both mercenaries, and will help out anybody for the right amount of money. Because of their loose morals, they generally find themselves in the employ of the more evil organisations. But at the moment they are in between jobs and are simply hanging around Baldur’s Gate hoping to pick up some information regarding employment.
Also in the city are some spies working for the Black Sun, a organisation devoted to the subjugation of the prime material plane and they desire this to bring order to a chaotic universe. The PCs in my game have already run afoul of the Black Sun, but they were not able to do anything as they were imprisoned and sold to drow slavers. Only two remain from this original party, but they are known as they are considered dangerous. The Black Sun keeps their eyes open for potential trouble makers and veteran adventurers.