A serial killer kidnaps a young boy after murdering his mother, then raises him to be his accomplice. After years in captivity, the boy must choose between escaping or following in his captor's bloody footprints.

Ace, a 12-year-old boy is new in middle school. His grandfather from Transylvania passes away at the ripe age of 99, and sends him his dog, Fang, to look after. Ace soon discovers that Fang is a vampire dog. Professor Warhol, a mad scientist and her bumbling assistant Frank, try to capture Fang to steal his DNA, in order to look young.