From the file's introduction
Everyone knows that too much candy is bad for your health, but never has that old adage been as literally true as it is in this adventure. Tales of cruel and deranged people tainting the candy they hand out to trick-or-treaters on Halloween have changed the entire culture of that holiday in America. But in Blood Sugar, a group of fanatical cultists takes the adulteration of children’s candy a step further. They break into the processing plant of a local candy manufacturer and use an arcane ritual to enchant a batch of confections, which they plan to distribute to the local children at an All Hallows Eve street fair.
A Short Urban Arcana Adventure for Four 10th-Level Characters