High Quality Content by WIKIPEDIA articles! Sweet Sixteen is an original novel based on the U.S. television series Buffy.Buffy has a run in with a couple demons at store while a gangly blonde girl watches on. Afterwards Buffy tries to talk to her but she runs off, faster than Buffy can catch her. Meanwhile Dawn has befriended a girl named Arianna at her school. Arianna has no friends and an abusive mother and has always longed to become a heroine. After it becomes clear that Arianna is the exceptionally strong girl that Buffy ran into, the gang tries to find out where Arianna's powers are coming from.