13-year-old Adam Hansen (Matt O'Leary) and his best friend Duffy (Jake Epstein) have tickets for the Headless Horseman concert, and his 16-year-old sister Chelsea (Laura Vandervoort) has a date with her dreamy boyfriend Peter. Because Adam hasn't done his homework, instead making up a story using an article from the magazine The Weekly Secret, and because Chelsea calls Adam a dweeb, their mother Lynette (Caroline Rhea) grounds them both. Chelsea and Adam will do whatever it takes to get their mother out of the house, so they set her up on a date with a mysterious man named Dimitri (Charles Shaughnessy). Everything seems to go according to plan, until their 8-year-old little brother Taylor (Myles Jeffrey) sees Dimitri turn into a bat, and realizes that he's a vampire.
His brother and sister do not believe Taylor, so he calls Malachi Van Helsing (Robert Carradine), the vampire hunter. The night that their mother goes out with Dimitri, Taylor follows them. Not wanting their mother to come home and extend their punishments, Chelsea and Adam follow Taylor. Adam notices Dimitri does not have a reflection. Along with Chelsea, he sets out to stop Dimitri, who puts their mother in a trance and plans to take her to his mansion. Meanwhile, Malachi Van Helsing arrives and begins to hunt down Dimitri, only to discover that he was being followed by Taylor.
Dimitri goes to bite a powerless Adam, but he and Chelsea call out to Lynette, breaking her trance (as only true love can break a vampire's thrall). She throws Dimitri into his coffin. Van Helsing seals the it with silver-plated nails and explains that he plans to send it to Finland, a place where it's always sunny. Van Helsing asks their mother out on a date. They all go back to the Hansen house for breakfast as the sun is finally rising.
Cast
Caroline Rhea as Lynette Hansen, the strict no nonsense divorced mother of Chelsea, Adam, and Taylor. Lynette is overprotective of Taylor.
Matt O'Leary as Adam Hansen, the 13-year-old protagonist. The lazy middle child of the family.