A woman, Willi, meets a man, Peter, and is strongly attracted to him. He tells her he is a transman, and although she's never been with a transgendered person, she is undaunted. She is, though, taken aback when he tells her that rather than use a strap-on as a substitute penis, he has a dog trained for that purpose. She reluctantly agrees to try it, and finds that she does like it, and really does feel that his dog Dick is Peter's penis.
They settle into a happy relationship, until Peg, Peter's deranged ex-girlfriend, comes back to town. Peg rapes Peter in an especially horrid way, and Willie later takes a terrible revenge.
[Note: This story does feature transgendered persons, bestiality and nonconsensual sex. It is not recommended for persons who have difficulty with any of these subjects.]