The Hansen kids are in a jam. Adam and his best friend Duffy have tickets to the Headless Horseman concert, and his sister Chelsea has a date with her dreamy boyfriend Peter. The only problem is that they both have to stay home. Chelsea and Adam will do anything to get their mom Lynette out of the house, even if it means meeting a very strange man by accident. Everything seems to be going as planned until their little brother Taylor figures out that this stranger might be a vampire.