A garage sale. One person's trash is another treasure. Especially today of all days.
Laying on the cloth and plastic covered tables, surrounded by countless amounts of old VHS recordings, brass trophies, Tupperware, fine china and plastic toys were these tapes. Tapes that could let you do anything if you chose the right one. All of these cassette tapes would let any person of choosing turn into anything that whoever bought it desired. A maid for instance, or perhaps to make a horrible co-worker believe that he was a donkey. Maybe to make the smartest woman at school into a blonde bimbo or to make anyone into someone's pet.
All these tapes could actually change them, slowly, making whoever listened to the tape believe that what they were hearing right in their minds. Anyone who would listen would be changed. No questions asked. They won't even find any clues that they were being changed.
The question is... who is going to buy them... and who was someone's next victim?