One dark and stormy night, a young woman named Sarah is driving home from her job at the local grocery store. She takes a shortcut through a dark and deserted part of town, and her car breaks down. She is forced to seek help from a nearby house, which turns out to be a run-down mansion inhabited by a strange old woman. The woman tells Sarah that she is a witch, and she has been expecting her. The witch offers to help Sarah fix her car, but only if she agrees to perform a special task for her. Sarah reluctantly agrees, and the witch leads her into the basement of the house. There, she shows Sarah a cauldron full of bubbling green liquid. The witch explains that this is a potion that will allow her to control the minds of others. She tells Sarah that she must use it to kill the local mayor, who has been causing problems for the witch. Sarah is horrified by this request, but the witch threatens to kill her if she does not comply. She gives Sarah a vial of the potion and sends her on her way.