Billy had a depraved mind and a magical amulet. He had the ability to put anyone under his spell and obey his commands. As soon as he realized he had this ability, he knew who had the be the first one to get a visit.
It was his sexy Aunt Tina.
Billy stopped by to show Aunt Tina his magical amulet, and soon she was completely under his control. He could do whatever he wanted to her now, no one else was home. Well, no one that is, except for her German Shepard named Rex.