Ray Crandall has just graduated from high school, and is at loose ends over a sticky, Chicago summer. He's been targeted by street gangs for forced membership or worse, if he refuses. His grandmother sends him to a meeting of her favorite charity, intending to get him involved with a safe peer group. He's not at all certain he wants to become a member of something called the Fairy Godmothers Union. The Union pairs him up with a senior fairy godmother, Rose Feinstein, who teaches him about magic and responsibility. Ray finds he has a talent for making wishes come true, and even enjoys the job. There are perks called brownie points one earns for granting a wish, little bits of magic for personal use.
The Fairy Godmothers Union is being targeted by a rival organization, the Demons, Djinni and Efreets Guild, headed by their Grand Master, Albert Froister. The Djinni want the store of brownie points commanded by the FGU, since the DDEG has a different charter. They've enlisted help, the very street gangs who have targeted Ray. He finds himself in the middle of a new kind of turf war, with magic and the children of Chicago as the prize.