A man's life takes a dramatic turn when he takes experimental pills that transform his cock into a massive, equine appendage during a workout.
His wife, Sarah, discovers his transformation and is immediately drawn to his new size and power, leading to a night of intense, primal sex.
The pills' effects continue to transform Sarah as well, turning her into a powerful, muscular woman with her own equine cock, and she takes control of their relationship, dominating Eric in increasingly intense and humiliating ways.
Sarah's hunger for more power and size leads her to take the pills herself, accelerating her transformation and making her even more dominant and aggressive.
As Sarah's transformations continue, she becomes insatiable, pushing Eric to his limits and beyond, exploring new depths of sexual depravity and dominance.