Into every generation a slayer is born: one girl in all the world, a chosen one. She alone will wield the strength and skill to fight the vampires, demons, and the forces of darkness; to stop the spread of their evil and the swell of their number. She is the Slayer.

Thirteen-year-old Desi has two big problems: her cartoonist father is being duped by a sexy, money-hungry agent, and she needs to find a date for a friend's birthday party. An apprentice angel is sent to Earth to help Desi deal with the situation.